75620401 has 4 divisors (see below), whose sum is σ = 75784192. Its totient is φ = 75456612.

The previous prime is 75620381. The next prime is 75620411. The reversal of 75620401 is 10402657.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10402657 = 17 ⋅611921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75620401 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (75620411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81201 + ... + 82126.

It is an arithmetic number, because the mean of its divisors is an integer number (18946048).

Almost surely, 2^75620401 is an apocalyptic number.

It is an amenable number.

75620401 is a deficient number, since it is larger than the sum of its proper divisors (163791).

75620401 is a wasteful number, since it uses less digits than its factorization.

75620401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163790.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 75620401 is about 8695.9991375345. Note that the first 3 decimals coincide. The cubic root of 75620401 is about 422.8759554083.

The spelling of 75620401 in words is "seventy-five million, six hundred twenty thousand, four hundred one".