149986620 has 96 divisors (see below), whose sum is σ = 533299200. Its totient is φ = 34281792.

The previous prime is 149986609. The next prime is 149986621. The reversal of 149986620 is 26689941.

It is a happy number.

149986620 is a `hidden beast` number, since 14 + 9 + 9 + 8 + 6 + 620 = 666.

149986620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149986621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16060 + ... + 23619.

It is an arithmetic number, because the mean of its divisors is an integer number (5555200).

Almost surely, 2^149986620 is an apocalyptic number.

149986620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

149986620 is an abundant number, since it is smaller than the sum of its proper divisors (383312580).

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

149986620 is a wasteful number, since it uses less digits than its factorization.

149986620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39704 (or 39696 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 149986620 is about 12246.9024655216. The cubic root of 149986620 is about 531.3134859308.

The spelling of 149986620 in words is "one hundred forty-nine million, nine hundred eighty-six thousand, six hundred twenty".