7500661 has 8 divisors (see below), whose sum is σ = 8593920. Its totient is φ = 6412848.

The previous prime is 7500641. The next prime is 7500673. The reversal of 7500661 is 1660057.

7500661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7500661 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 (7500631) 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, 2235 + ... + 4471.

It is an arithmetic number, because the mean of its divisors is an integer number (1074240).

Almost surely, 2^7500661 is an apocalyptic number.

It is an amenable number.

7500661 is a deficient number, since it is larger than the sum of its proper divisors (1093259).

7500661 is a wasteful number, since it uses less digits than its factorization.

7500661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 7500661 is about 2738.7334664038. The cubic root of 7500661 is about 195.7491323951.

The spelling of 7500661 in words is "seven million, five hundred thousand, six hundred sixty-one".