699673968 has 120 divisors (see below), whose sum is σ = 2310137856. Its totient is φ = 193449600.

The previous prime is 699673951. The next prime is 699673969. The reversal of 699673968 is 869376996.

It is a super-2 number, since 2×699673968² = 979087322993730048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699673969) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20053 + ... + 42443.

Almost surely, 2^699673968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699673968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1155068928).

699673968 is an abundant number, since it is smaller than the sum of its proper divisors (1610463888).

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

699673968 is a wasteful number, since it uses less digits than its factorization.

699673968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22443 (or 22434 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The square root of 699673968 is about 26451.3509673892. The cubic root of 699673968 is about 887.7661302794.

The spelling of 699673968 in words is "six hundred ninety-nine million, six hundred seventy-three thousand, nine hundred sixty-eight".