649950420 has 48 divisors (see below), whose sum is σ = 2079842688. Its totient is φ = 148560000.

The previous prime is 649950403. The next prime is 649950439. The reversal of 649950420 is 24059946.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 773331 + ... + 774170.

It is an arithmetic number, because the mean of its divisors is an integer number (43330056).

Almost surely, 2^649950420 is an apocalyptic number.

649950420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

649950420 is an abundant number, since it is smaller than the sum of its proper divisors (1429892268).

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

649950420 is a wasteful number, since it uses less digits than its factorization.

649950420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547520 (or 1547518 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 649950420 is about 25494.1252056234. The cubic root of 649950420 is about 866.2170800964.

It can be divided in two parts, 649950 and 420, that added together give a triangular number (650370 = T₁₁₄₀).

The spelling of 649950420 in words is "six hundred forty-nine million, nine hundred fifty thousand, four hundred twenty".