88691061 has 16 divisors (see below), whose sum is σ = 120637440. Its totient is φ = 57947760.

The previous prime is 88691047. The next prime is 88691063. The reversal of 88691061 is 16019688.

It is a de Polignac number, because none of the positive numbers 2^k-88691061 is a prime.

It is a super-2 number, since 2×88691061² = 15732208602611442, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88691063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31260 + ... + 33978.

It is an arithmetic number, because the mean of its divisors is an integer number (7539840).

Almost surely, 2^88691061 is an apocalyptic number.

It is an amenable number.

88691061 is a deficient number, since it is larger than the sum of its proper divisors (31946379).

88691061 is a wasteful number, since it uses less digits than its factorization.

88691061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 88691061 is about 9417.5931638609. The cubic root of 88691061 is about 445.9573062017.

The spelling of 88691061 in words is "eighty-eight million, six hundred ninety-one thousand, sixty-one".