6645152 has 12 divisors (see below), whose sum is σ = 13082706. Its totient is φ = 3322560.

The previous prime is 6645151. The next prime is 6645161. The reversal of 6645152 is 2515466.

It can be written as a sum of positive squares in only one way, i.e., 6370576 + 274576 = 2524^2 + 524^2 .

It is not an unprimeable number, because it can be changed into a prime (6645151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103799 + ... + 103862.

Almost surely, 2^6645152 is an apocalyptic number.

It is an amenable number.

6645152 is a deficient number, since it is larger than the sum of its proper divisors (6437554).

6645152 is a wasteful number, since it uses less digits than its factorization.

6645152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207671 (or 207663 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 6645152 is about 2577.8192333831. The cubic root of 6645152 is about 188.0045268263.

The spelling of 6645152 in words is "six million, six hundred forty-five thousand, one hundred fifty-two".