7657949 has 8 divisors (see below), whose sum is σ = 8271480. Its totient is φ = 7047936.

The previous prime is 7657933. The next prime is 7657963. The reversal of 7657949 is 9497567.

7657949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2229049 + 5428900 = 1493^2 + 2330^2 .

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 7657949 - 2⁴ = 7657933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7657049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5297 + ... + 6585.

It is an arithmetic number, because the mean of its divisors is an integer number (1033935).

Almost surely, 2^7657949 is an apocalyptic number.

It is an amenable number.

7657949 is a deficient number, since it is larger than the sum of its proper divisors (613531).

7657949 is a wasteful number, since it uses less digits than its factorization.

7657949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its digits is 476280, while the sum is 47.

The square root of 7657949 is about 2767.2999476024. The cubic root of 7657949 is about 197.1079570100.

The spelling of 7657949 in words is "seven million, six hundred fifty-seven thousand, nine hundred forty-nine".