149670657 has 12 divisors (see below), whose sum is σ = 227569680. Its totient is φ = 94528728.

The previous prime is 149670629. The next prime is 149670667. The reversal of 149670657 is 756076941.

It is a happy number.

It is not a de Polignac number, because 149670657 - 2¹⁴ = 149654273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149670667) 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 11 ways as a sum of consecutive naturals, for example, 437463 + ... + 437804.

It is an arithmetic number, because the mean of its divisors is an integer number (18964140).

Almost surely, 2^149670657 is an apocalyptic number.

It is an amenable number.

149670657 is a deficient number, since it is larger than the sum of its proper divisors (77899023).

149670657 is a wasteful number, since it uses less digits than its factorization.

149670657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875292 (or 875289 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 149670657 is about 12233.9959538983. The cubic root of 149670657 is about 530.9401339086.

The spelling of 149670657 in words is "one hundred forty-nine million, six hundred seventy thousand, six hundred fifty-seven".