649340152 has 8 divisors (see below), whose sum is σ = 1217512800. Its totient is φ = 324670072.

The previous prime is 649340129. The next prime is 649340161. The reversal of 649340152 is 251043946.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

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, 40583752 + ... + 40583767.

It is an arithmetic number, because the mean of its divisors is an integer number (152189100).

Almost surely, 2^649340152 is an apocalyptic number.

It is an amenable number.

649340152 is a deficient number, since it is larger than the sum of its proper divisors (568172648).

649340152 is a wasteful number, since it uses less digits than its factorization.

649340152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81167525 (or 81167521 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 649340152 is about 25482.1535981557. The cubic root of 649340152 is about 865.9458849995.

The spelling of 649340152 in words is "six hundred forty-nine million, three hundred forty thousand, one hundred fifty-two".