147994785 has 24 divisors (see below), whose sum is σ = 256884264. Its totient is φ = 78819840.

The previous prime is 147994747. The next prime is 147994787. The reversal of 147994785 is 587499741.

147994785 is a `hidden beast` number, since 1 + 479 + 94 + 7 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 4210704 + 143784081 = 2052^2 + 11991^2 .

It is not a de Polignac number, because 147994785 - 2¹⁰ = 147993761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (147994787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37779 + ... + 41511.

It is an arithmetic number, because the mean of its divisors is an integer number (10703511).

Almost surely, 2^147994785 is an apocalyptic number.

147994785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147994785 is a deficient number, since it is larger than the sum of its proper divisors (108889479).

147994785 is a wasteful number, since it uses less digits than its factorization.

147994785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4625 (or 4622 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 147994785 is about 12165.3107235286. The cubic root of 147994785 is about 528.9510343315.

The spelling of 147994785 in words is "one hundred forty-seven million, nine hundred ninety-four thousand, seven hundred eighty-five".