90578047 has 8 divisors (see below), whose sum is σ = 103577600. Its totient is φ = 77593464.

The previous prime is 90578041. The next prime is 90578053. The reversal of 90578047 is 74087509.

It is an interprime number because it is at equal distance from previous prime (90578041) and next prime (90578053).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90578047 - 2²³ = 82189439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90578041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16654 + ... + 21412.

It is an arithmetic number, because the mean of its divisors is an integer number (12947200).

Almost surely, 2^90578047 is an apocalyptic number.

90578047 is the 4759-th decagonal number.

90578047 is a deficient number, since it is larger than the sum of its proper divisors (12999553).

90578047 is a wasteful number, since it uses less digits than its factorization.

90578047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7485.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 90578047 is about 9517.2499704484. The cubic root of 90578047 is about 449.0978584759.

The spelling of 90578047 in words is "ninety million, five hundred seventy-eight thousand, forty-seven".