697421088 has 432 divisors, whose sum is σ = 2589874560. Its totient is φ = 173961216.

The previous prime is 697421083. The next prime is 697421099. The reversal of 697421088 is 880124796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697421083) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 7836148 + ... + 7836236.

It is an arithmetic number, because the mean of its divisors is an integer number (5995080).

Almost surely, 2^697421088 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 697421088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294937280).

697421088 is an abundant number, since it is smaller than the sum of its proper divisors (1892453472).

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

697421088 is a wasteful number, since it uses less digits than its factorization.

697421088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 697421088 is about 26408.7312834222. The cubic root of 697421088 is about 886.8122664648.

The spelling of 697421088 in words is "six hundred ninety-seven million, four hundred twenty-one thousand, eighty-eight".