75257630 has 64 divisors (see below), whose sum is σ = 162518400. Its totient is φ = 25062912.

The previous prime is 75257617. The next prime is 75257641. The reversal of 75257630 is 3675257.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126614 + ... + 127206.

It is an arithmetic number, because the mean of its divisors is an integer number (2539350).

Almost surely, 2^75257630 is an apocalyptic number.

75257630 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

75257630 is an abundant number, since it is smaller than the sum of its proper divisors (87260770).

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

75257630 is a wasteful number, since it uses less digits than its factorization.

75257630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 75257630 is about 8675.1155611899. The cubic root of 75257630 is about 422.1986553738.

The spelling of 75257630 in words is "seventy-five million, two hundred fifty-seven thousand, six hundred thirty".