1061997696 has 128 divisors (see below), whose sum is σ = 3158654400. Its totient is φ = 351258624.

The previous prime is 1061997691. The next prime is 1061997697. The reversal of 1061997696 is 6967991601.

1061997696 is a `hidden beast` number, since 10 + 619 + 9 + 7 + 6 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1061997696² = 2255678212618616832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061997691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 472351 + ... + 474593.

Almost surely, 2^1061997696 is an apocalyptic number.

1061997696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061997696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1579327200).

1061997696 is an abundant number, since it is smaller than the sum of its proper divisors (2096656704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1061997696 is a wasteful number, since it uses less digits than its factorization.

1061997696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403 (or 2385 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 1061997696 is about 32588.3061235161. The cubic root of 1061997696 is about 1020.2529476475.

The spelling of 1061997696 in words is "one billion, sixty-one million, nine hundred ninety-seven thousand, six hundred ninety-six".