88690749 has 32 divisors (see below), whose sum is σ = 139345920. Its totient is φ = 49123200.

The previous prime is 88690733. The next prime is 88690759. The reversal of 88690749 is 94709688.

It is a happy number.

It is not a de Polignac number, because 88690749 - 2⁴ = 88690733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88690759) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205564 + ... + 205994.

It is an arithmetic number, because the mean of its divisors is an integer number (4354560).

Almost surely, 2^88690749 is an apocalyptic number.

It is an amenable number.

88690749 is a deficient number, since it is larger than the sum of its proper divisors (50655171).

88690749 is a wasteful number, since it uses less digits than its factorization.

88690749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 88690749 is about 9417.5765991045. The cubic root of 88690749 is about 445.9567832672.

The spelling of 88690749 in words is "eighty-eight million, six hundred ninety thousand, seven hundred forty-nine".