147977617 has 4 divisors (see below), whose sum is σ = 148006000. Its totient is φ = 147949236.

The previous prime is 147977611. The next prime is 147977659. The reversal of 147977617 is 716779741.

It is a happy number.

147977617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 716779741 = 5683 ⋅126127.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147977617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147977611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3867 + ... + 17632.

It is an arithmetic number, because the mean of its divisors is an integer number (37001500).

Almost surely, 2^147977617 is an apocalyptic number.

It is an amenable number.

147977617 is a deficient number, since it is larger than the sum of its proper divisors (28383).

147977617 is an equidigital number, since it uses as much as digits as its factorization.

147977617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28382.

The product of its digits is 518616, while the sum is 49.

The square root of 147977617 is about 12164.6050901786. The cubic root of 147977617 is about 528.9305800465.

The spelling of 147977617 in words is "one hundred forty-seven million, nine hundred seventy-seven thousand, six hundred seventeen".