693407538 has 24 divisors (see below), whose sum is σ = 1504118928. Its totient is φ = 230868792.

The previous prime is 693407503. The next prime is 693407549. The reversal of 693407538 is 835704396.

It is a junction number, because it is equal to n+sod(n) for n = 693407493 and 693407502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5920 + ... + 37707.

It is an arithmetic number, because the mean of its divisors is an integer number (62671622).

Almost surely, 2^693407538 is an apocalyptic number.

693407538 is an abundant number, since it is smaller than the sum of its proper divisors (810711390).

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

693407538 is a wasteful number, since it uses less digits than its factorization.

693407538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44518 (or 44515 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 693407538 is about 26332.6325687349. The cubic root of 693407538 is about 885.1078370941.

The spelling of 693407538 in words is "six hundred ninety-three million, four hundred seven thousand, five hundred thirty-eight".