149336661 has 4 divisors (see below), whose sum is σ = 199115552. Its totient is φ = 99557772.

The previous prime is 149336659. The next prime is 149336683. The reversal of 149336661 is 166633941.

149336661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 149336661 - 2¹ = 149336659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149336651) 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, 24889441 + ... + 24889446.

It is an arithmetic number, because the mean of its divisors is an integer number (49778888).

Almost surely, 2^149336661 is an apocalyptic number.

It is an amenable number.

149336661 is a deficient number, since it is larger than the sum of its proper divisors (49778891).

149336661 is an equidigital number, since it uses as much as digits as its factorization.

149336661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49778890.

The product of its digits is 69984, while the sum is 39.

The square root of 149336661 is about 12220.3380067820. The cubic root of 149336661 is about 530.5449017903.

The spelling of 149336661 in words is "one hundred forty-nine million, three hundred thirty-six thousand, six hundred sixty-one".