1699864056 has 80 divisors (see below), whose sum is σ = 5194050840. Its totient is φ = 515108160.

The previous prime is 1699864043. The next prime is 1699864091. The reversal of 1699864056 is 6504689961.

It is a happy number.

It is a super-2 number, since 2×1699864056² = 5779075617761542272, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1699863993 and 1699864011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 112111 + ... + 126366.

Almost surely, 2^1699864056 is an apocalyptic number.

It is an amenable number.

1699864056 is an abundant number, since it is smaller than the sum of its proper divisors (3494186784).

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

1699864056 is a wasteful number, since it uses less digits than its factorization.

1699864056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238506 (or 238493 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The square root of 1699864056 is about 41229.4076600671. The cubic root of 1699864056 is about 1193.4513779658.

The spelling of 1699864056 in words is "one billion, six hundred ninety-nine million, eight hundred sixty-four thousand, fifty-six".