620265246154 has 4 divisors (see below), whose sum is σ = 930397869234. Its totient is φ = 310132623076.

The previous prime is 620265246121. The next prime is 620265246157. The reversal of 620265246154 is 451642562026.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 510288779025 + 109976467129 = 714345^2 + 331627^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 620265246154.

It is not an unprimeable number, because it can be changed into a prime (620265246157) 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 as a sum of consecutive naturals, namely, 155066311537 + ... + 155066311540.

Almost surely, 2^620265246154 is an apocalyptic number.

620265246154 is a deficient number, since it is larger than the sum of its proper divisors (310132623080).

620265246154 is a wasteful number, since it uses less digits than its factorization.

620265246154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310132623079.

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 620265246154 in words is "six hundred twenty billion, two hundred sixty-five million, two hundred forty-six thousand, one hundred fifty-four".