693053957 has 4 divisors (see below), whose sum is σ = 693128640. Its totient is φ = 692979276.

The previous prime is 693053953. The next prime is 693053971. The reversal of 693053957 is 759350396.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 693053957 - 2² = 693053953 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693053951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21053 + ... + 42770.

It is an arithmetic number, because the mean of its divisors is an integer number (173282160).

Almost surely, 2^693053957 is an apocalyptic number.

It is an amenable number.

693053957 is a deficient number, since it is larger than the sum of its proper divisors (74683).

693053957 is a wasteful number, since it uses less digits than its factorization.

693053957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74682.

The product of its (nonzero) digits is 765450, while the sum is 47.

The square root of 693053957 is about 26325.9179706995. The cubic root of 693053957 is about 884.9573673697.

The spelling of 693053957 in words is "six hundred ninety-three million, fifty-three thousand, nine hundred fifty-seven".