649236598 has 4 divisors (see below), whose sum is σ = 973854900. Its totient is φ = 324618298.

The previous prime is 649236589. The next prime is 649236607. The reversal of 649236598 is 895632946.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (649236589) and next prime (649236607).

It is a super-2 number, since 2×649236598² = 843016320365227208, which contains 22 as substring.

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, 162309148 + ... + 162309151.

It is an arithmetic number, because the mean of its divisors is an integer number (243463725).

Almost surely, 2^649236598 is an apocalyptic number.

649236598 is a deficient number, since it is larger than the sum of its proper divisors (324618302).

649236598 is a wasteful number, since it uses less digits than its factorization.

649236598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324618301.

The product of its digits is 2799360, while the sum is 52.

The square root of 649236598 is about 25480.1216245135. The cubic root of 649236598 is about 865.8998500992.

The spelling of 649236598 in words is "six hundred forty-nine million, two hundred thirty-six thousand, five hundred ninety-eight".