75652397 has 6 divisors (see below), whose sum is σ = 80364618. Its totient is φ = 71201984.

The previous prime is 75652393. The next prime is 75652399. The reversal of 75652397 is 79325657.

It can be written as a sum of positive squares in 3 ways, for example, as 14280841 + 61371556 = 3779^2 + 7834^2 .

It is not a de Polignac number, because 75652397 - 2² = 75652393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75652391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130598 + ... + 131175.

It is an arithmetic number, because the mean of its divisors is an integer number (13394103).

Almost surely, 2^75652397 is an apocalyptic number.

It is an amenable number.

75652397 is a deficient number, since it is larger than the sum of its proper divisors (4712221).

75652397 is a wasteful number, since it uses less digits than its factorization.

75652397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261807 (or 261790 counting only the distinct ones).

The product of its digits is 396900, while the sum is 44.

The square root of 75652397 is about 8697.8386395702. The cubic root of 75652397 is about 422.9355884837.

The spelling of 75652397 in words is "seventy-five million, six hundred fifty-two thousand, three hundred ninety-seven".