649735622 has 4 divisors (see below), whose sum is σ = 974603436. Its totient is φ = 324867810.

The previous prime is 649735591. The next prime is 649735643. The reversal of 649735622 is 226537946.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 226537946 = 2 ⋅113268973.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162433904 + ... + 162433907.

It is an arithmetic number, because the mean of its divisors is an integer number (243650859).

Almost surely, 2^649735622 is an apocalyptic number.

649735622 is a deficient number, since it is larger than the sum of its proper divisors (324867814).

649735622 is a wasteful number, since it uses less digits than its factorization.

649735622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324867813.

The product of its digits is 544320, while the sum is 44.

The square root of 649735622 is about 25489.9121614807. The cubic root of 649735622 is about 866.1216460493.

The spelling of 649735622 in words is "six hundred forty-nine million, seven hundred thirty-five thousand, six hundred twenty-two".