75648990 has 32 divisors (see below), whose sum is σ = 187416576. Its totient is φ = 19522080.

The previous prime is 75648983. The next prime is 75649003. The reversal of 75648990 is 9984657.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39742 + ... + 41601.

It is an arithmetic number, because the mean of its divisors is an integer number (5856768).

Almost surely, 2^75648990 is an apocalyptic number.

75648990 is an abundant number, since it is smaller than the sum of its proper divisors (111767586).

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

75648990 is a wasteful number, since it uses less digits than its factorization.

75648990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81384.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 75648990 is about 8697.6427841111. The cubic root of 75648990 is about 422.9292394309.

The spelling of 75648990 in words is "seventy-five million, six hundred forty-eight thousand, nine hundred ninety".