149567690 has 32 divisors (see below), whose sum is σ = 278456400. Its totient is φ = 57798144.

The previous prime is 149567687. The next prime is 149567699. The reversal of 149567690 is 96765941.

149567690 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 113699569 + 35868121 = 10663^2 + 5989^2 .

It is a super-2 number, since 2×149567690² = 44740987783872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149567699) 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 15 ways as a sum of consecutive naturals, for example, 53774 + ... + 56486.

Almost surely, 2^149567690 is an apocalyptic number.

149567690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

149567690 is a deficient number, since it is larger than the sum of its proper divisors (128888710).

149567690 is a wasteful number, since it uses less digits than its factorization.

149567690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2906.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 149567690 is about 12229.7869973275. The cubic root of 149567690 is about 530.8183512885.

The spelling of 149567690 in words is "one hundred forty-nine million, five hundred sixty-seven thousand, six hundred ninety".