75566401 has 8 divisors (see below), whose sum is σ = 79767680. Its totient is φ = 71387568.

The previous prime is 75566399. The next prime is 75566441. The reversal of 75566401 is 10466557.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75566401 - 2¹ = 75566399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75566441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1555 + ... + 12391.

It is an arithmetic number, because the mean of its divisors is an integer number (9970960).

Almost surely, 2^75566401 is an apocalyptic number.

It is an amenable number.

75566401 is a deficient number, since it is larger than the sum of its proper divisors (4201279).

75566401 is a wasteful number, since it uses less digits than its factorization.

75566401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11223.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 75566401 is about 8692.8937069310. The cubic root of 75566401 is about 422.7752738507.

The spelling of 75566401 in words is "seventy-five million, five hundred sixty-six thousand, four hundred one".