75398945 has 8 divisors (see below), whose sum is σ = 94412736. Its totient is φ = 57696496.

The previous prime is 75398923. The next prime is 75398957. The reversal of 75398945 is 54989357.

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 75398945 - 2¹⁴ = 75382561 is a prime.

It is a super-2 number, since 2×75398945² = 11370001814226050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 75398893 and 75398902.

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, 327707 + ... + 327936.

It is an arithmetic number, because the mean of its divisors is an integer number (11801592).

Almost surely, 2^75398945 is an apocalyptic number.

It is an amenable number.

75398945 is a deficient number, since it is larger than the sum of its proper divisors (19013791).

75398945 is a wasteful number, since it uses less digits than its factorization.

75398945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655671.

The product of its digits is 1360800, while the sum is 50.

The square root of 75398945 is about 8683.2565895521. The cubic root of 75398945 is about 422.4627512882.

The spelling of 75398945 in words is "seventy-five million, three hundred ninety-eight thousand, nine hundred forty-five".