1699245864 has 40 divisors (see below), whose sum is σ = 4759463610. Its totient is φ = 566415072.

The previous prime is 1699245857. The next prime is 1699245869. The reversal of 1699245864 is 4685429961.

It can be written as a sum of positive squares in only one way, i.e., 1395022500 + 304223364 = 37350^2 + 17442^2 .

It is a super-2 number, since 2×1699245864² = 5774873012642212992, which contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1699245864.

It is not an unprimeable number, because it can be changed into a prime (1699245869) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1310499 + ... + 1311794.

Almost surely, 2^1699245864 is an apocalyptic number.

It is an amenable number.

1699245864 is an abundant number, since it is smaller than the sum of its proper divisors (3060217746).

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

1699245864 is a wasteful number, since it uses less digits than its factorization.

1699245864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622311 (or 2622298 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1699245864 is about 41221.9099994166. The cubic root of 1699245864 is about 1193.3066856992.

The spelling of 1699245864 in words is "one billion, six hundred ninety-nine million, two hundred forty-five thousand, eight hundred sixty-four".