86947870 has 32 divisors (see below), whose sum is σ = 163213056. Its totient is φ = 33312000.

The previous prime is 86947859. The next prime is 86947871. The reversal of 86947870 is 7874968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86947871) 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, 29922 + ... + 32698.

It is an arithmetic number, because the mean of its divisors is an integer number (5100408).

Almost surely, 2^86947870 is an apocalyptic number.

86947870 is a deficient number, since it is larger than the sum of its proper divisors (76265186).

86947870 is a wasteful number, since it uses less digits than its factorization.

86947870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 86947870 is about 9324.5841730342. The cubic root of 86947870 is about 443.0162423747.

The spelling of 86947870 in words is "eighty-six million, nine hundred forty-seven thousand, eight hundred seventy".