697157487444 has 48 divisors (see below), whose sum is σ = 1794521856960. Its totient is φ = 208886135040.

The previous prime is 697157487413. The next prime is 697157487487. The reversal of 697157487444 is 444784751796.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29659579 + ... + 29683074.

It is an arithmetic number, because the mean of its divisors is an integer number (37385872020).

Almost surely, 2^697157487444 is an apocalyptic number.

It is an amenable number.

697157487444 is an abundant number, since it is smaller than the sum of its proper divisors (1097364369516).

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

697157487444 is a wasteful number, since it uses less digits than its factorization.

697157487444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59342760 (or 59342758 counting only the distinct ones).

The product of its digits is 189665280, while the sum is 66.

The spelling of 697157487444 in words is "six hundred ninety-seven billion, one hundred fifty-seven million, four hundred eighty-seven thousand, four hundred forty-four".