649363572 has 216 divisors, whose sum is σ = 2007952128. Its totient is φ = 175219200.

The previous prime is 649363553. The next prime is 649363591. The reversal of 649363572 is 275363946.

649363572 is a `hidden beast` number, since 6 + 4 + 9 + 3 + 635 + 7 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (649363553) and next prime (649363591).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2074488 + ... + 2074800.

Almost surely, 2^649363572 is an apocalyptic number.

649363572 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 649363572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003976064).

649363572 is an abundant number, since it is smaller than the sum of its proper divisors (1358588556).

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

649363572 is a wasteful number, since it uses less digits than its factorization.

649363572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 373 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 649363572 is about 25482.6131313097. The cubic root of 649363572 is about 865.9562956750.

The spelling of 649363572 in words is "six hundred forty-nine million, three hundred sixty-three thousand, five hundred seventy-two".