87662401 has 4 divisors (see below), whose sum is σ = 87698052. Its totient is φ = 87626752.

The previous prime is 87662381. The next prime is 87662411. The reversal of 87662401 is 10426678.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27196225 + 60466176 = 5215^2 + 7776^2 .

It is a cyclic number.

It is not a de Polignac number, because 87662401 - 2¹⁷ = 87531329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87662411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13840 + ... + 19153.

It is an arithmetic number, because the mean of its divisors is an integer number (21924513).

Almost surely, 2^87662401 is an apocalyptic number.

It is an amenable number.

87662401 is a deficient number, since it is larger than the sum of its proper divisors (35651).

87662401 is a wasteful number, since it uses less digits than its factorization.

87662401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35650.

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

The square root of 87662401 is about 9362.8201413890. The cubic root of 87662401 is about 444.2264911180.

The spelling of 87662401 in words is "eighty-seven million, six hundred sixty-two thousand, four hundred one".