648879045 has 16 divisors (see below), whose sum is σ = 1048488192. Its totient is φ = 342641600.

The previous prime is 648879017. The next prime is 648879067. The reversal of 648879045 is 540978846.

It is not a de Polignac number, because 648879045 - 2⁶ = 648878981 is a prime.

It is a super-2 number, since 2×648879045² = 842088030080224050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212637 + ... + 215666.

It is an arithmetic number, because the mean of its divisors is an integer number (65530512).

Almost surely, 2^648879045 is an apocalyptic number.

It is an amenable number.

648879045 is a deficient number, since it is larger than the sum of its proper divisors (399609147).

648879045 is a wasteful number, since it uses less digits than its factorization.

648879045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428412.

The product of its (nonzero) digits is 1935360, while the sum is 51.

The square root of 648879045 is about 25473.1043455642. The cubic root of 648879045 is about 865.7408623776.

The spelling of 648879045 in words is "six hundred forty-eight million, eight hundred seventy-nine thousand, forty-five".