307149661 has 16 divisors (see below), whose sum is σ = 378448000. Its totient is φ = 242751168.

The previous prime is 307149637. The next prime is 307149671. The reversal of 307149661 is 166941703.

It is a cyclic number.

It is not a de Polignac number, because 307149661 - 2⁵ = 307149629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 307149661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (307149671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139870 + ... + 142048.

It is an arithmetic number, because the mean of its divisors is an integer number (23653000).

Almost surely, 2^307149661 is an apocalyptic number.

It is an amenable number.

307149661 is a deficient number, since it is larger than the sum of its proper divisors (71298339).

307149661 is a wasteful number, since it uses less digits than its factorization.

307149661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 307149661 is about 17525.6857497788. The cubic root of 307149661 is about 674.7092747099.

The spelling of 307149661 in words is "three hundred seven million, one hundred forty-nine thousand, six hundred sixty-one".