649179441 has 45 divisors (see below), whose sum is σ = 1030403451. Its totient is φ = 407256336.

The previous prime is 649179373. The next prime is 649179449. The reversal of 649179441 is 144971946.

The square root of 649179441 is 25479.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 76055841 + 573123600 = 8721^2 + 23940^2 .

It is not a de Polignac number, because 649179441 - 2⁷ = 649179313 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (649179449) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 4356835 + ... + 4356983.

Almost surely, 2^649179441 is an apocalyptic number.

649179441 is the 25479-th square number.

649179441 is the 12740-th centered octagonal number.

It is an amenable number.

649179441 is a deficient number, since it is larger than the sum of its proper divisors (381224010).

649179441 is an equidigital number, since it uses as much as digits as its factorization.

649179441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 171 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The cubic root of 649179441 is about 865.8744388751.

The spelling of 649179441 in words is "six hundred forty-nine million, one hundred seventy-nine thousand, four hundred forty-one".