7606665021 has 16 divisors (see below), whose sum is σ = 10601922560. Its totient is φ = 4845400560.

The previous prime is 7606664987. The next prime is 7606665089. The reversal of 7606665021 is 1205666067.

7606665021 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 7606665021 - 2⁷ = 7606664893 is a prime.

It is a super-2 number, since 2×7606665021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7606665221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510325 + ... + 525018.

It is an arithmetic number, because the mean of its divisors is an integer number (662620160).

Almost surely, 2^7606665021 is an apocalyptic number.

It is an amenable number.

7606665021 is a deficient number, since it is larger than the sum of its proper divisors (2995257539).

7606665021 is a wasteful number, since it uses less digits than its factorization.

7606665021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035456.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 7606665021 is about 87216.1970106471. The cubic root of 7606665021 is about 1966.6697167657.

The spelling of 7606665021 in words is "seven billion, six hundred six million, six hundred sixty-five thousand, twenty-one".