86550638 has 16 divisors (see below), whose sum is σ = 137803680. Its totient is φ = 40628736.

The previous prime is 86550623. The next prime is 86550647. The reversal of 86550638 is 83605568.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 86550595 and 86550604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11783 + ... + 17661.

It is an arithmetic number, because the mean of its divisors is an integer number (8612730).

Almost surely, 2^86550638 is an apocalyptic number.

86550638 is a deficient number, since it is larger than the sum of its proper divisors (51253042).

86550638 is a wasteful number, since it uses less digits than its factorization.

86550638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 86550638 is about 9303.2595363131. The cubic root of 86550638 is about 442.3405543407.

The spelling of 86550638 in words is "eighty-six million, five hundred fifty thousand, six hundred thirty-eight".