1064971698 has 128 divisors (see below), whose sum is σ = 2807654400. Its totient is φ = 261854208.

The previous prime is 1064971697. The next prime is 1064971709. The reversal of 1064971698 is 8961794601.

It is a happy number.

It is a super-2 number, since 2×1064971698² = 2268329435082006408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1064971698.

It is not an unprimeable number, because it can be changed into a prime (1064971697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 392061 + ... + 394767.

It is an arithmetic number, because the mean of its divisors is an integer number (21934800).

Almost surely, 2^1064971698 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1064971698, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1403827200).

1064971698 is an abundant number, since it is smaller than the sum of its proper divisors (1742682702).

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

1064971698 is a wasteful number, since it uses less digits than its factorization.

1064971698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 1064971698 is about 32633.9041182633. The cubic root of 1064971698 is about 1021.2044269132.

The spelling of 1064971698 in words is "one billion, sixty-four million, nine hundred seventy-one thousand, six hundred ninety-eight".