7956649 has 4 divisors (see below), whose sum is σ = 8375440. Its totient is φ = 7537860.

The previous prime is 7956631. The next prime is 7956661. The reversal of 7956649 is 9466597.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9466597 = 7 ⋅1352371.

It is a cyclic number.

It is not a de Polignac number, because 7956649 - 2⁷ = 7956521 is a prime.

It is a Duffinian number.

7956649 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7956599 and 7956608.

It is not an unprimeable number, because it can be changed into a prime (7956149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209367 + ... + 209404.

It is an arithmetic number, because the mean of its divisors is an integer number (2093860).

Almost surely, 2^7956649 is an apocalyptic number.

It is an amenable number.

7956649 is a deficient number, since it is larger than the sum of its proper divisors (418791).

7956649 is a wasteful number, since it uses less digits than its factorization.

7956649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418790.

The product of its digits is 408240, while the sum is 46.

The square root of 7956649 is about 2820.7532681892. The cubic root of 7956649 is about 199.6380871572.

It can be divided in two parts, 795664 and 9, that multiplied together give a square (7160976 = 2676²).

The spelling of 7956649 in words is "seven million, nine hundred fifty-six thousand, six hundred forty-nine".