620444436746 has 8 divisors (see below), whose sum is σ = 931131297504. Its totient is φ = 310067337580.

The previous prime is 620444436719. The next prime is 620444436751. The reversal of 620444436746 is 647634444026.

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

It is a super-2 number, since 2×620444436746² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620444436694 and 620444436703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77435390 + ... + 77443401.

It is an arithmetic number, because the mean of its divisors is an integer number (116391412188).

Almost surely, 2^620444436746 is an apocalyptic number.

620444436746 is a deficient number, since it is larger than the sum of its proper divisors (310686860758).

620444436746 is a wasteful number, since it uses less digits than its factorization.

620444436746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154880796.

The product of its (nonzero) digits is 9289728, while the sum is 50.

The spelling of 620444436746 in words is "six hundred twenty billion, four hundred forty-four million, four hundred thirty-six thousand, seven hundred forty-six".