620012434 has 4 divisors (see below), whose sum is σ = 930018654. Its totient is φ = 310006216.

The previous prime is 620012429. The next prime is 620012447. The reversal of 620012434 is 434210026.

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., 484220025 + 135792409 = 22005^2 + 11653^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155003107 + ... + 155003110.

Almost surely, 2^620012434 is an apocalyptic number.

620012434 is a deficient number, since it is larger than the sum of its proper divisors (310006220).

620012434 is a wasteful number, since it uses less digits than its factorization.

620012434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310006219.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 620012434 is about 24900.0488754540. The cubic root of 620012434 is about 852.7075985564.

The spelling of 620012434 in words is "six hundred twenty million, twelve thousand, four hundred thirty-four".