693457640641 has 8 divisors (see below), whose sum is σ = 721463681024. Its totient is φ = 665803877760.

The previous prime is 693457640597. The next prime is 693457640651. The reversal of 693457640641 is 146046754396.

693457640641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 693457640641 - 2¹¹ = 693457638593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693457640651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88065360 + ... + 88073233.

It is an arithmetic number, because the mean of its divisors is an integer number (90182960128).

Almost surely, 2^693457640641 is an apocalyptic number.

It is an amenable number.

693457640641 is a deficient number, since it is larger than the sum of its proper divisors (28006040383).

693457640641 is a wasteful number, since it uses less digits than its factorization.

693457640641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176138751.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 693457640641 in words is "six hundred ninety-three billion, four hundred fifty-seven million, six hundred forty thousand, six hundred forty-one".