87024661 has 2 divisors, whose sum is σ = 87024662. Its totient is φ = 87024660.

The previous prime is 87024659. The next prime is 87024667. The reversal of 87024661 is 16642078.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80102500 + 6922161 = 8950^2 + 2631^2 .

It is a cyclic number.

It is not a de Polignac number, because 87024661 - 2¹ = 87024659 is a prime.

Together with 87024659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87024667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43512330 + 43512331.

It is an arithmetic number, because the mean of its divisors is an integer number (43512331).

Almost surely, 2^87024661 is an apocalyptic number.

It is an amenable number.

87024661 is a deficient number, since it is larger than the sum of its proper divisors (1).

87024661 is an equidigital number, since it uses as much as digits as its factorization.

87024661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 87024661 is about 9328.7009277820. The cubic root of 87024661 is about 443.1466256721.

The spelling of 87024661 in words is "eighty-seven million, twenty-four thousand, six hundred sixty-one".