6660772 has 12 divisors (see below), whose sum is σ = 11764060. Its totient is φ = 3299616.

The previous prime is 6660763. The next prime is 6660781. The reversal of 6660772 is 2770666.

It is an interprime number because it is at equal distance from previous prime (6660763) and next prime (6660781).

It can be written as a sum of positive squares in 2 ways, for example, as 2359296 + 4301476 = 1536^2 + 2074^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7203 + ... + 8074.

Almost surely, 2^6660772 is an apocalyptic number.

It is an amenable number.

6660772 is a deficient number, since it is larger than the sum of its proper divisors (5103288).

6660772 is a wasteful number, since it uses less digits than its factorization.

6660772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15390 (or 15388 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 6660772 is about 2580.8471477404. The cubic root of 6660772 is about 188.1517184819.

The spelling of 6660772 in words is "six million, six hundred sixty thousand, seven hundred seventy-two".