7772661 has 24 divisors (see below), whose sum is σ = 12486656. Its totient is φ = 4626720.

The previous prime is 7772641. The next prime is 7772663. The reversal of 7772661 is 1662777.

7772661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7772661 - 2⁵ = 7772629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7772663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2556 + ... + 4698.

Almost surely, 2^7772661 is an apocalyptic number.

It is an amenable number.

7772661 is a deficient number, since it is larger than the sum of its proper divisors (4713995).

7772661 is a wasteful number, since it uses less digits than its factorization.

7772661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193 (or 2190 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 7772661 is about 2787.9492463099. The cubic root of 7772661 is about 198.0872740450.

The spelling of 7772661 in words is "seven million, seven hundred seventy-two thousand, six hundred sixty-one".