699865920 has 560 divisors, whose sum is σ = 2808841728. Its totient is φ = 164229120.

The previous prime is 699865913. The next prime is 699865939. The reversal of 699865920 is 29568996.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10445727 + ... + 10445793.

Almost surely, 2^699865920 is an apocalyptic number.

699865920 is a gapful number since it is divisible by the number (60) 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 699865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1404420864).

699865920 is an abundant number, since it is smaller than the sum of its proper divisors (2108975808).

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

699865920 is a wasteful number, since it uses less digits than its factorization.

699865920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 699865920 is about 26454.9791154709. The cubic root of 699865920 is about 887.8473075662.

The spelling of 699865920 in words is "six hundred ninety-nine million, eight hundred sixty-five thousand, nine hundred twenty".