149647684 has 24 divisors (see below), whose sum is σ = 269497368. Its totient is φ = 72656640.

The previous prime is 149647681. The next prime is 149647691. The reversal of 149647684 is 486746941.

It can be written as a sum of positive squares in 4 ways, for example, as 56100100 + 93547584 = 7490^2 + 9672^2 .

It is not an unprimeable number, because it can be changed into a prime (149647681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140514 + ... + 141574.

It is an arithmetic number, because the mean of its divisors is an integer number (11229057).

Almost surely, 2^149647684 is an apocalyptic number.

It is an amenable number.

149647684 is a deficient number, since it is larger than the sum of its proper divisors (119849684).

149647684 is a wasteful number, since it uses less digits than its factorization.

149647684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2055 (or 2053 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 49.

The square root of 149647684 is about 12233.0570177695. The cubic root of 149647684 is about 530.9129677914.

The spelling of 149647684 in words is "one hundred forty-nine million, six hundred forty-seven thousand, six hundred eighty-four".