697669632 has 384 divisors, whose sum is σ = 2390169600. Its totient is φ = 199065600.

The previous prime is 697669591. The next prime is 697669657. The reversal of 697669632 is 236966796.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (384).

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

Its product of digits (4408992) is a multiple of the sum of its prime divisors (84).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18855918 + ... + 18855954.

It is an arithmetic number, because the mean of its divisors is an integer number (6224400).

Almost surely, 2^697669632 is an apocalyptic number.

697669632 is a gapful number since it is divisible by the number (62) 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 697669632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1195084800).

697669632 is an abundant number, since it is smaller than the sum of its proper divisors (1692499968).

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

697669632 is a wasteful number, since it uses less digits than its factorization.

697669632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 84 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 697669632 is about 26413.4365806496. The cubic root of 697669632 is about 886.9176000974.

The spelling of 697669632 in words is "six hundred ninety-seven million, six hundred sixty-nine thousand, six hundred thirty-two".