694648431 has 12 divisors (see below), whose sum is σ = 1003624440. Its totient is φ = 462986640.

The previous prime is 694648411. The next prime is 694648433. The reversal of 694648431 is 134846496.

It is not a de Polignac number, because 694648431 - 2⁵ = 694648399 is a prime.

It is a super-2 number, since 2×694648431² = 965072885381523522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (694648433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48885 + ... + 61473.

It is an arithmetic number, because the mean of its divisors is an integer number (83635370).

Almost surely, 2^694648431 is an apocalyptic number.

694648431 is a deficient number, since it is larger than the sum of its proper divisors (308976009).

694648431 is a wasteful number, since it uses less digits than its factorization.

694648431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18726 (or 18723 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 694648431 is about 26356.1839233224. The cubic root of 694648431 is about 885.6355063883.

The spelling of 694648431 in words is "six hundred ninety-four million, six hundred forty-eight thousand, four hundred thirty-one".