7661607 has 4 divisors (see below), whose sum is σ = 10215480. Its totient is φ = 5107736.

The previous prime is 7661603. The next prime is 7661639. The reversal of 7661607 is 7061667.

7661607 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 7661607 - 2² = 7661603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661603) 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, 1276932 + ... + 1276937.

It is an arithmetic number, because the mean of its divisors is an integer number (2553870).

Almost surely, 2^7661607 is an apocalyptic number.

7661607 is a deficient number, since it is larger than the sum of its proper divisors (2553873).

7661607 is a wasteful number, since it uses less digits than its factorization.

7661607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553872.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 7661607 is about 2767.9608017456. The cubic root of 7661607 is about 197.1393364361.

The spelling of 7661607 in words is "seven million, six hundred sixty-one thousand, six hundred seven".