620152643 has 4 divisors (see below), whose sum is σ = 676530168. Its totient is φ = 563775120.

The previous prime is 620152601. The next prime is 620152661. The reversal of 620152643 is 346251026.

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

It is a cyclic number.

It is not a de Polignac number, because 620152643 - 2⁸ = 620152387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620152693) 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, 28188746 + ... + 28188767.

It is an arithmetic number, because the mean of its divisors is an integer number (169132542).

Almost surely, 2^620152643 is an apocalyptic number.

620152643 is a deficient number, since it is larger than the sum of its proper divisors (56377525).

620152643 is a wasteful number, since it uses less digits than its factorization.

620152643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56377524.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 620152643 is about 24902.8641525428. The cubic root of 620152643 is about 852.7718705301.

The spelling of 620152643 in words is "six hundred twenty million, one hundred fifty-two thousand, six hundred forty-three".