87446861 has 16 divisors (see below), whose sum is σ = 96908400. Its totient is φ = 78532608.

The previous prime is 87446857. The next prime is 87446869. The reversal of 87446861 is 16864478.

It can be written as a sum of positive squares in 8 ways, for example, as 1142761 + 86304100 = 1069^2 + 9290^2 .

It is a cyclic number.

It is not a de Polignac number, because 87446861 - 2² = 87446857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87446869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42881 + ... + 44873.

It is an arithmetic number, because the mean of its divisors is an integer number (6056775).

Almost surely, 2^87446861 is an apocalyptic number.

It is an amenable number.

87446861 is a deficient number, since it is larger than the sum of its proper divisors (9461539).

87446861 is a wasteful number, since it uses less digits than its factorization.

87446861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128.

The product of its digits is 258048, while the sum is 44.

The square root of 87446861 is about 9351.3026365314. The cubic root of 87446861 is about 443.8621115660.

The spelling of 87446861 in words is "eighty-seven million, four hundred forty-six thousand, eight hundred sixty-one".