75037640 has 32 divisors (see below), whose sum is σ = 170079480. Its totient is φ = 29793792.

The previous prime is 75037637. The next prime is 75037673. The reversal of 75037640 is 4673057.

It can be written as a sum of positive squares in 4 ways, for example, as 74891716 + 145924 = 8654^2 + 382^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75037597 and 75037606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367 + ... + 12326.

Almost surely, 2^75037640 is an apocalyptic number.

It is an amenable number.

75037640 is an abundant number, since it is smaller than the sum of its proper divisors (95041840).

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

75037640 is a wasteful number, since it uses less digits than its factorization.

75037640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13841 (or 13837 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 75037640 is about 8662.4269116686. The cubic root of 75037640 is about 421.7868693089.

The spelling of 75037640 in words is "seventy-five million, thirty-seven thousand, six hundred forty".