649126830 has 64 divisors (see below), whose sum is σ = 1788998400. Its totient is φ = 149080320.

The previous prime is 649126787. The next prime is 649126837. The reversal of 649126830 is 38621946.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649126837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45495 + ... + 58034.

It is an arithmetic number, because the mean of its divisors is an integer number (27953100).

Almost surely, 2^649126830 is an apocalyptic number.

649126830 is an abundant number, since it is smaller than the sum of its proper divisors (1139871570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649126830 is a wasteful number, since it uses less digits than its factorization.

649126830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103569.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 649126830 is about 25477.9675406026. The cubic root of 649126830 is about 865.8510474223.

The spelling of 649126830 in words is "six hundred forty-nine million, one hundred twenty-six thousand, eight hundred thirty".