1620674626 has 8 divisors (see below), whose sum is σ = 2437784640. Its totient is φ = 808079748.

The previous prime is 1620674623. The next prime is 1620674641. The reversal of 1620674626 is 6264760261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1620674623) 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, 1127886 + ... + 1129321.

It is an arithmetic number, because the mean of its divisors is an integer number (304723080).

Almost surely, 2^1620674626 is an apocalyptic number.

1620674626 is a deficient number, since it is larger than the sum of its proper divisors (817110014).

1620674626 is a wasteful number, since it uses less digits than its factorization.

1620674626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257568.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1620674626 is about 40257.6033315447. The cubic root of 1620674626 is about 1174.6232988303.

The spelling of 1620674626 in words is "one billion, six hundred twenty million, six hundred seventy-four thousand, six hundred twenty-six".