620250240645 has 64 divisors (see below), whose sum is σ = 1260376128000. Its totient is φ = 283501306368.

The previous prime is 620250240583. The next prime is 620250240689. The reversal of 620250240645 is 546042052026.

620250240645 is a `hidden beast` number, since 6 + 2 + 0 + 2 + 5 + 0 + 2 + 4 + 0 + 645 = 666.

It is not a de Polignac number, because 620250240645 - 2⁹ = 620250240133 is a prime.

It is a super-2 number, since 2×620250240645² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6919171 + ... + 7008239.

It is an arithmetic number, because the mean of its divisors is an integer number (19693377000).

Almost surely, 2^620250240645 is an apocalyptic number.

It is an amenable number.

620250240645 is an abundant number, since it is smaller than the sum of its proper divisors (640125887355).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620250240645 is a wasteful number, since it uses less digits than its factorization.

620250240645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96459 (or 96453 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 620250240645 in words is "six hundred twenty billion, two hundred fifty million, two hundred forty thousand, six hundred forty-five".