649422236 has 12 divisors (see below), whose sum is σ = 1203341328. Its totient is φ = 305610432.

The previous prime is 649422233. The next prime is 649422239. The reversal of 649422236 is 632224946.

It is an interprime number because it is at equal distance from previous prime (649422233) and next prime (649422239).

It is a super-2 number, since 2×649422236² = 843498481222479392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 649422236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649422233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4775096 + ... + 4775231.

It is an arithmetic number, because the mean of its divisors is an integer number (100278444).

Almost surely, 2^649422236 is an apocalyptic number.

It is an amenable number.

649422236 is a deficient number, since it is larger than the sum of its proper divisors (553919092).

649422236 is a wasteful number, since it uses less digits than its factorization.

649422236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9550348 (or 9550346 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The square root of 649422236 is about 25483.7641646598. The cubic root of 649422236 is about 865.9823719403.

The spelling of 649422236 in words is "six hundred forty-nine million, four hundred twenty-two thousand, two hundred thirty-six".