149665506 has 8 divisors (see below), whose sum is σ = 299331024. Its totient is φ = 49888500.

The previous prime is 149665487. The next prime is 149665507. The reversal of 149665506 is 605566941.

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

149665506 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (149665507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12472120 + ... + 12472131.

It is an arithmetic number, because the mean of its divisors is an integer number (37416378).

Almost surely, 2^149665506 is an apocalyptic number.

149665506 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149665506 is a wasteful number, since it uses less digits than its factorization.

149665506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24944256.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 149665506 is about 12233.7854321547. The cubic root of 149665506 is about 530.9340429707.

The spelling of 149665506 in words is "one hundred forty-nine million, six hundred sixty-five thousand, five hundred six".