7457945 has 8 divisors (see below), whose sum is σ = 9763200. Its totient is φ = 5423920.

The previous prime is 7457929. The next prime is 7457953. The reversal of 7457945 is 5497547.

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

It is not a de Polignac number, because 7457945 - 2⁴ = 7457929 is a prime.

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, 67745 + ... + 67854.

It is an arithmetic number, because the mean of its divisors is an integer number (1220400).

Almost surely, 2^7457945 is an apocalyptic number.

It is an amenable number.

7457945 is a deficient number, since it is larger than the sum of its proper divisors (2305255).

7457945 is a wasteful number, since it uses less digits than its factorization.

7457945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135615.

The product of its digits is 176400, while the sum is 41.

The square root of 7457945 is about 2730.9238363601. The cubic root of 7457945 is about 195.3768299454.

The spelling of 7457945 in words is "seven million, four hundred fifty-seven thousand, nine hundred forty-five".