86660402 has 4 divisors (see below), whose sum is σ = 129990606. Its totient is φ = 43330200.

The previous prime is 86660377. The next prime is 86660411. The reversal of 86660402 is 20406668.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 85174441 + 1485961 = 9229^2 + 1219^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21665099 + ... + 21665102.

Almost surely, 2^86660402 is an apocalyptic number.

86660402 is a deficient number, since it is larger than the sum of its proper divisors (43330204).

86660402 is a wasteful number, since it uses less digits than its factorization.

86660402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43330203.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 86660402 is about 9309.1568898585. The cubic root of 86660402 is about 442.5274682641.

The spelling of 86660402 in words is "eighty-six million, six hundred sixty thousand, four hundred two".