75407620 has 12 divisors (see below), whose sum is σ = 158356044. Its totient is φ = 30163040.

The previous prime is 75407603. The next prime is 75407621. The reversal of 75407620 is 2670457.

It can be written as a sum of positive squares in 2 ways, for example, as 43665664 + 31741956 = 6608^2 + 5634^2 .

It is not an unprimeable number, because it can be changed into a prime (75407621) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1885171 + ... + 1885210.

It is an arithmetic number, because the mean of its divisors is an integer number (13196337).

Almost surely, 2^75407620 is an apocalyptic number.

It is an amenable number.

75407620 is an abundant number, since it is smaller than the sum of its proper divisors (82948424).

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

75407620 is a wasteful number, since it uses less digits than its factorization.

75407620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770390 (or 3770388 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 31.

The square root of 75407620 is about 8683.7560997531. The cubic root of 75407620 is about 422.4789527697.

The spelling of 75407620 in words is "seventy-five million, four hundred seven thousand, six hundred twenty".