691375106 has 16 divisors (see below), whose sum is σ = 1042651008. Its totient is φ = 343830000.

The previous prime is 691375073. The next prime is 691375117. The reversal of 691375106 is 601573196.

It is a super-2 number, since 2×691375106² = 955999074393022472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 691375106.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 439301 + ... + 440871.

It is an arithmetic number, because the mean of its divisors is an integer number (65165688).

Almost surely, 2^691375106 is an apocalyptic number.

691375106 is a deficient number, since it is larger than the sum of its proper divisors (351275902).

691375106 is a wasteful number, since it uses less digits than its factorization.

691375106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 691375106 is about 26294.0127405461. The cubic root of 691375106 is about 884.2422172607.

The spelling of 691375106 in words is "six hundred ninety-one million, three hundred seventy-five thousand, one hundred six".