699666432 has 104 divisors (see below), whose sum is σ = 1887992736. Its totient is φ = 230424576.

The previous prime is 699666421. The next prime is 699666439. The reversal of 699666432 is 234666996.

It is a super-2 number, since 2×699666432² = 979066232135221248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (699666439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191643 + ... + 1192229.

Almost surely, 2^699666432 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 699666432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (943996368).

699666432 is an abundant number, since it is smaller than the sum of its proper divisors (1188326304).

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

699666432 is an equidigital number, since it uses as much as digits as its factorization.

699666432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 689 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 51.

The square root of 699666432 is about 26451.2085168145. The cubic root of 699666432 is about 887.7629429713.

The spelling of 699666432 in words is "six hundred ninety-nine million, six hundred sixty-six thousand, four hundred thirty-two".