697064940 has 576 divisors, whose sum is σ = 2773854720. Its totient is φ = 144322560.

The previous prime is 697064939. The next prime is 697064947. The reversal of 697064940 is 49460796.

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

It is not an unprimeable number, because it can be changed into a prime (697064947) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 11814631 + ... + 11814689.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^697064940 is an apocalyptic number.

697064940 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 697064940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386927360).

697064940 is an abundant number, since it is smaller than the sum of its proper divisors (2076789780).

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

697064940 is a wasteful number, since it uses less digits than its factorization.

697064940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 697064940 is about 26401.9874251921. The cubic root of 697064940 is about 886.6612863286.

The spelling of 697064940 in words is "six hundred ninety-seven million, sixty-four thousand, nine hundred forty".