87046621 has 2 divisors, whose sum is σ = 87046622. Its totient is φ = 87046620.

The previous prime is 87046591. The next prime is 87046627. The reversal of 87046621 is 12664078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86211225 + 835396 = 9285^2 + 914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87046621 is a prime.

It is a super-2 number, since 2×87046621² = 15154228455035282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87046627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43523310 + 43523311.

It is an arithmetic number, because the mean of its divisors is an integer number (43523311).

Almost surely, 2^87046621 is an apocalyptic number.

It is an amenable number.

87046621 is a deficient number, since it is larger than the sum of its proper divisors (1).

87046621 is an equidigital number, since it uses as much as digits as its factorization.

87046621 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 87046621 is about 9329.8778662960. The cubic root of 87046621 is about 443.1838974115.

The spelling of 87046621 in words is "eighty-seven million, forty-six thousand, six hundred twenty-one".