649355371 has 8 divisors (see below), whose sum is σ = 742424544. Its totient is φ = 556362240.

The previous prime is 649355359. The next prime is 649355411. The reversal of 649355371 is 173553946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 649355371 - 2⁵ = 649355339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649355351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651 + ... + 36043.

It is an arithmetic number, because the mean of its divisors is an integer number (92803068).

Almost surely, 2^649355371 is an apocalyptic number.

649355371 is a deficient number, since it is larger than the sum of its proper divisors (93069173).

649355371 is a wasteful number, since it uses less digits than its factorization.

649355371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38021.

The product of its digits is 340200, while the sum is 43.

The square root of 649355371 is about 25482.4522171631. The cubic root of 649355371 is about 865.9526501890.

The spelling of 649355371 in words is "six hundred forty-nine million, three hundred fifty-five thousand, three hundred seventy-one".