427665153 has 4 divisors (see below), whose sum is σ = 570220208. Its totient is φ = 285110100.

The previous prime is 427665149. The next prime is 427665179. The reversal of 427665153 is 351566724.

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.

It is not a de Polignac number, because 427665153 - 2² = 427665149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427665113) 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, 71277523 + ... + 71277528.

It is an arithmetic number, because the mean of its divisors is an integer number (142555052).

Almost surely, 2^427665153 is an apocalyptic number.

It is an amenable number.

427665153 is a deficient number, since it is larger than the sum of its proper divisors (142555055).

427665153 is a wasteful number, since it uses less digits than its factorization.

427665153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142555054.

The product of its digits is 151200, while the sum is 39.

The square root of 427665153 is about 20680.0665617884. The cubic root of 427665153 is about 753.4156228580.

The spelling of 427665153 in words is "four hundred twenty-seven million, six hundred sixty-five thousand, one hundred fifty-three".