691914074 has 16 divisors (see below), whose sum is σ = 1087257600. Its totient is φ = 329797104.

The previous prime is 691914053. The next prime is 691914121. The reversal of 691914074 is 470419196.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70922 + ... + 80085.

It is an arithmetic number, because the mean of its divisors is an integer number (67953600).

Almost surely, 2^691914074 is an apocalyptic number.

691914074 is a deficient number, since it is larger than the sum of its proper divisors (395343526).

691914074 is a wasteful number, since it uses less digits than its factorization.

691914074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151117.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 691914074 is about 26304.2596170278. The cubic root of 691914074 is about 884.4719307059.

The spelling of 691914074 in words is "six hundred ninety-one million, nine hundred fourteen thousand, seventy-four".