86987946 has 32 divisors (see below), whose sum is σ = 187697088. Its totient is φ = 26773760.

The previous prime is 86987941. The next prime is 86987959. The reversal of 86987946 is 64978968.

It is not an unprimeable number, because it can be changed into a prime (86987941) 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, 2640 + ... + 13451.

It is an arithmetic number, because the mean of its divisors is an integer number (5865534).

Almost surely, 2^86987946 is an apocalyptic number.

86987946 is an abundant number, since it is smaller than the sum of its proper divisors (100709142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86987946 is a wasteful number, since it uses less digits than its factorization.

86987946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16166.

The product of its digits is 5225472, while the sum is 57.

The square root of 86987946 is about 9326.7328684808. The cubic root of 86987946 is about 443.0842969146.

The spelling of 86987946 in words is "eighty-six million, nine hundred eighty-seven thousand, nine hundred forty-six".