149662665 has 24 divisors (see below), whose sum is σ = 260444808. Its totient is φ = 79503360.

The previous prime is 149662663. The next prime is 149662703. The reversal of 149662665 is 566266941.

149662665 is a `hidden beast` number, since 14 + 9 + 6 + 626 + 6 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 75064896 + 74597769 = 8664^2 + 8637^2 .

It is not a de Polignac number, because 149662665 - 2¹ = 149662663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 149662665.

It is not an unprimeable number, because it can be changed into a prime (149662663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5095 + ... + 18035.

It is an arithmetic number, because the mean of its divisors is an integer number (10851867).

Almost surely, 2^149662665 is an apocalyptic number.

149662665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149662665 is a deficient number, since it is larger than the sum of its proper divisors (110782143).

149662665 is a wasteful number, since it uses less digits than its factorization.

149662665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13209 (or 13206 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 149662665 is about 12233.6693187285. The cubic root of 149662665 is about 530.9306834944.

The spelling of 149662665 in words is "one hundred forty-nine million, six hundred sixty-two thousand, six hundred sixty-five".