649222426 has 32 divisors (see below), whose sum is σ = 1032808320. Its totient is φ = 305454336.

The previous prime is 649222423. The next prime is 649222459. The reversal of 649222426 is 624222946.

It is not an unprimeable number, because it can be changed into a prime (649222423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420390 + ... + 1420846.

It is an arithmetic number, because the mean of its divisors is an integer number (32275260).

Almost surely, 2^649222426 is an apocalyptic number.

649222426 is a deficient number, since it is larger than the sum of its proper divisors (383585894).

649222426 is a wasteful number, since it uses less digits than its factorization.

649222426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918.

The product of its digits is 82944, while the sum is 37.

The square root of 649222426 is about 25479.8435238523. The cubic root of 649222426 is about 865.8935495600.

The spelling of 649222426 in words is "six hundred forty-nine million, two hundred twenty-two thousand, four hundred twenty-six".