149623601 has 8 divisors (see below), whose sum is σ = 150615240. Its totient is φ = 148635648.

The previous prime is 149623589. The next prime is 149623603. The reversal of 149623601 is 106326941.

It can be written as a sum of positive squares in 4 ways, for example, as 102495376 + 47128225 = 10124^2 + 6865^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149623601 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149623603) 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 7 ways as a sum of consecutive naturals, for example, 147785 + ... + 148793.

It is an arithmetic number, because the mean of its divisors is an integer number (18826905).

Almost surely, 2^149623601 is an apocalyptic number.

It is an amenable number.

149623601 is a deficient number, since it is larger than the sum of its proper divisors (991639).

149623601 is a wasteful number, since it uses less digits than its factorization.

149623601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1843.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 149623601 is about 12232.0726371290. The cubic root of 149623601 is about 530.8844860878.

The spelling of 149623601 in words is "one hundred forty-nine million, six hundred twenty-three thousand, six hundred one".