691714942 has 16 divisors (see below), whose sum is σ = 1073643120. Its totient is φ = 334014912.

The previous prime is 691714927. The next prime is 691714957. The reversal of 691714942 is 249417196.

It is an interprime number because it is at equal distance from previous prime (691714927) and next prime (691714957).

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37533 + ... + 52840.

It is an arithmetic number, because the mean of its divisors is an integer number (67102695).

Almost surely, 2^691714942 is an apocalyptic number.

691714942 is a deficient number, since it is larger than the sum of its proper divisors (381928178).

691714942 is a wasteful number, since it uses less digits than its factorization.

691714942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90507.

The product of its digits is 108864, while the sum is 43.

The square root of 691714942 is about 26300.4741782349. The cubic root of 691714942 is about 884.3870725951.

The spelling of 691714942 in words is "six hundred ninety-one million, seven hundred fourteen thousand, nine hundred forty-two".