88564621 has 2 divisors, whose sum is σ = 88564622. Its totient is φ = 88564620.

The previous prime is 88564607. The next prime is 88564627. The reversal of 88564621 is 12646588.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84382596 + 4182025 = 9186^2 + 2045^2 .

It is a cyclic number.

It is not a de Polignac number, because 88564621 - 2⁷ = 88564493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88564627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44282310 + 44282311.

It is an arithmetic number, because the mean of its divisors is an integer number (44282311).

Almost surely, 2^88564621 is an apocalyptic number.

It is an amenable number.

88564621 is a deficient number, since it is larger than the sum of its proper divisors (1).

88564621 is an equidigital number, since it uses as much as digits as its factorization.

88564621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 40.

The square root of 88564621 is about 9410.8778017781. The cubic root of 88564621 is about 445.7452831114.

The spelling of 88564621 in words is "eighty-eight million, five hundred sixty-four thousand, six hundred twenty-one".