87311066 has 32 divisors (see below), whose sum is σ = 139124736. Its totient is φ = 41040000.

The previous prime is 87311057. The next prime is 87311089. The reversal of 87311066 is 66011378.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 457031 + ... + 457221.

It is an arithmetic number, because the mean of its divisors is an integer number (4347648).

Almost surely, 2^87311066 is an apocalyptic number.

87311066 is a deficient number, since it is larger than the sum of its proper divisors (51813670).

87311066 is a wasteful number, since it uses less digits than its factorization.

87311066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 87311066 is about 9344.0390624184. The cubic root of 87311066 is about 443.6322367926.

The spelling of 87311066 in words is "eighty-seven million, three hundred eleven thousand, sixty-six".