697088340 has 144 divisors (see below), whose sum is σ = 2397158400. Its totient is φ = 162549504.

The previous prime is 697088339. The next prime is 697088369. The reversal of 697088340 is 43880796.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36621 + ... + 52299.

Almost surely, 2^697088340 is an apocalyptic number.

697088340 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 697088340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1198579200).

697088340 is an abundant number, since it is smaller than the sum of its proper divisors (1700070060).

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

697088340 is a wasteful number, since it uses less digits than its factorization.

697088340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15726 (or 15721 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 697088340 is about 26402.4305699305. The cubic root of 697088340 is about 886.6712077581.

The spelling of 697088340 in words is "six hundred ninety-seven million, eighty-eight thousand, three hundred forty".