83578023 has 6 divisors (see below), whose sum is σ = 120723824. Its totient is φ = 55718676.

The previous prime is 83578007. The next prime is 83578037. The reversal of 83578023 is 32087538.

83578023 is a `hidden beast` number, since 83 + 578 + 0 + 2 + 3 = 666.

It is not a de Polignac number, because 83578023 - 2⁴ = 83578007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83578003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4643215 + ... + 4643232.

Almost surely, 2^83578023 is an apocalyptic number.

83578023 is a deficient number, since it is larger than the sum of its proper divisors (37145801).

83578023 is a wasteful number, since it uses less digits than its factorization.

83578023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9286453 (or 9286450 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 83578023 is about 9142.1016730290. The cubic root of 83578023 is about 437.2173268435.

The spelling of 83578023 in words is "eighty-three million, five hundred seventy-eight thousand, twenty-three".