620735616401 has 16 divisors (see below), whose sum is σ = 631240888320. Its totient is φ = 610320240720.

The previous prime is 620735616373. The next prime is 620735616433. The reversal of 620735616401 is 104616537026.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620735616401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620735616491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86125940 + ... + 86133146.

It is an arithmetic number, because the mean of its divisors is an integer number (39452555520).

Almost surely, 2^620735616401 is an apocalyptic number.

It is an amenable number.

620735616401 is a deficient number, since it is larger than the sum of its proper divisors (10505271919).

620735616401 is a wasteful number, since it uses less digits than its factorization.

620735616401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13244.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 620735616401 in words is "six hundred twenty billion, seven hundred thirty-five million, six hundred sixteen thousand, four hundred one".