675749691 has 24 divisors (see below), whose sum is σ = 1006784064. Its totient is φ = 436521600.

The previous prime is 675749689. The next prime is 675749707. The reversal of 675749691 is 196947576.

675749691 is a `hidden beast` number, since 6 + 7 + 574 + 9 + 69 + 1 = 666.

It is not a de Polignac number, because 675749691 - 2¹ = 675749689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (675749621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34815 + ... + 50631.

It is an arithmetic number, because the mean of its divisors is an integer number (41949336).

Almost surely, 2^675749691 is an apocalyptic number.

675749691 is a deficient number, since it is larger than the sum of its proper divisors (331034373).

675749691 is a wasteful number, since it uses less digits than its factorization.

675749691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15971 (or 15968 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 675749691 is about 25995.1859197044. The cubic root of 675749691 is about 877.5299583119.

The spelling of 675749691 in words is "six hundred seventy-five million, seven hundred forty-nine thousand, six hundred ninety-one".