75640650 has 48 divisors (see below), whose sum is σ = 198630144. Its totient is φ = 18983680.

The previous prime is 75640627. The next prime is 75640673. The reversal of 75640650 is 5604657.

It is an interprime number because it is at equal distance from previous prime (75640627) and next prime (75640673).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12282 + ... + 17381.

It is an arithmetic number, because the mean of its divisors is an integer number (4138128).

Almost surely, 2^75640650 is an apocalyptic number.

75640650 is an abundant number, since it is smaller than the sum of its proper divisors (122989494).

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

75640650 is a wasteful number, since it uses less digits than its factorization.

75640650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29695 (or 29690 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 75640650 is about 8697.1633306498. The cubic root of 75640650 is about 422.9136967714.

The spelling of 75640650 in words is "seventy-five million, six hundred forty thousand, six hundred fifty".