87764653 has 2 divisors, whose sum is σ = 87764654. Its totient is φ = 87764652.

The previous prime is 87764647. The next prime is 87764669. The reversal of 87764653 is 35646778.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85414564 + 2350089 = 9242^2 + 1533^2 .

It is a cyclic number.

It is not a de Polignac number, because 87764653 - 2⁹ = 87764141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87764603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43882326 + 43882327.

It is an arithmetic number, because the mean of its divisors is an integer number (43882327).

Almost surely, 2^87764653 is an apocalyptic number.

It is an amenable number.

87764653 is a deficient number, since it is larger than the sum of its proper divisors (1).

87764653 is an equidigital number, since it uses as much as digits as its factorization.

87764653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 46.

The square root of 87764653 is about 9368.2790842289. The cubic root of 87764653 is about 444.3991436166.

The spelling of 87764653 in words is "eighty-seven million, seven hundred sixty-four thousand, six hundred fifty-three".