87261607 has 2 divisors, whose sum is σ = 87261608. Its totient is φ = 87261606.

The previous prime is 87261599. The next prime is 87261611. The reversal of 87261607 is 70616278.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87261607 - 2³ = 87261599 is a prime.

It is a super-2 number, since 2×87261607² = 15229176112444898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87261637) 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 as a sum of consecutive naturals, namely, 43630803 + 43630804.

It is an arithmetic number, because the mean of its divisors is an integer number (43630804).

Almost surely, 2^87261607 is an apocalyptic number.

87261607 is a deficient number, since it is larger than the sum of its proper divisors (1).

87261607 is an equidigital number, since it uses as much as digits as its factorization.

87261607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87261607 is about 9341.3921339381. The cubic root of 87261607 is about 443.5484530212.

The spelling of 87261607 in words is "eighty-seven million, two hundred sixty-one thousand, six hundred seven".