7611649 has 4 divisors (see below), whose sum is σ = 7740720. Its totient is φ = 7482580.

The previous prime is 7611613. The next prime is 7611661. The reversal of 7611649 is 9461167.

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.

It is a cyclic number.

It is not a de Polignac number, because 7611649 - 2⁷ = 7611521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7611449) 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, 64447 + ... + 64564.

It is an arithmetic number, because the mean of its divisors is an integer number (1935180).

Almost surely, 2^7611649 is an apocalyptic number.

It is an amenable number.

7611649 is a deficient number, since it is larger than the sum of its proper divisors (129071).

7611649 is a wasteful number, since it uses less digits than its factorization.

7611649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129070.

The product of its digits is 9072, while the sum is 34.

The square root of 7611649 is about 2758.9217096540. The cubic root of 7611649 is about 196.7099151591.

The spelling of 7611649 in words is "seven million, six hundred eleven thousand, six hundred forty-nine".