86623040 has 56 divisors (see below), whose sum is σ = 235744512. Its totient is φ = 29698560.

The previous prime is 86623013. The next prime is 86623057. The reversal of 86623040 is 4032668.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 86622994 and 86623012.

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, 17096 + ... + 21575.

Almost surely, 2^86623040 is an apocalyptic number.

86623040 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

86623040 is an abundant number, since it is smaller than the sum of its proper divisors (149121472).

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

86623040 is a wasteful number, since it uses less digits than its factorization.

86623040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38695 (or 38685 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 86623040 is about 9307.1499396969. The cubic root of 86623040 is about 442.4638633284.

The spelling of 86623040 in words is "eighty-six million, six hundred twenty-three thousand, forty".