7997415 has 16 divisors (see below), whose sum is σ = 12832128. Its totient is φ = 4253216.

The previous prime is 7997393. The next prime is 7997447. The reversal of 7997415 is 5147997.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7997415 - 2⁶ = 7997351 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7972 + ... + 8918.

It is an arithmetic number, because the mean of its divisors is an integer number (802008).

Almost surely, 2^7997415 is an apocalyptic number.

7997415 is a deficient number, since it is larger than the sum of its proper divisors (4834713).

7997415 is a wasteful number, since it uses less digits than its factorization.

7997415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518.

The product of its digits is 79380, while the sum is 42.

The square root of 7997415 is about 2827.9701200685. The cubic root of 7997415 is about 199.9784560127.

The spelling of 7997415 in words is "seven million, nine hundred ninety-seven thousand, four hundred fifteen".