7957646 has 4 divisors (see below), whose sum is σ = 11936472. Its totient is φ = 3978822.

The previous prime is 7957619. The next prime is 7957667. The reversal of 7957646 is 6467597.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×7957646² = 126648259722632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7957597 and 7957606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989410 + ... + 1989413.

It is an arithmetic number, because the mean of its divisors is an integer number (2984118).

Almost surely, 2^7957646 is an apocalyptic number.

7957646 is a deficient number, since it is larger than the sum of its proper divisors (3978826).

7957646 is a wasteful number, since it uses less digits than its factorization.

7957646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3978825.

The product of its digits is 317520, while the sum is 44.

The square root of 7957646 is about 2820.9299884967. The cubic root of 7957646 is about 199.6464252930.

The spelling of 7957646 in words is "seven million, nine hundred fifty-seven thousand, six hundred forty-six".