620426002645 has 8 divisors (see below), whose sum is σ = 745141617720. Its totient is φ = 495920525760.

The previous prime is 620426002643. The next prime is 620426002649. The reversal of 620426002645 is 546200624026.

It can be written as a sum of positive squares in 4 ways, for example, as 345454764516 + 274971238129 = 587754^2 + 524377^2 .

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

It is not a de Polignac number, because 620426002645 - 2¹ = 620426002643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620426002643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52528050 + ... + 52539859.

It is an arithmetic number, because the mean of its divisors is an integer number (93142702215).

Almost surely, 2^620426002645 is an apocalyptic number.

It is an amenable number.

620426002645 is a deficient number, since it is larger than the sum of its proper divisors (124715615075).

620426002645 is a wasteful number, since it uses less digits than its factorization.

620426002645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105069095.

The product of its (nonzero) digits is 138240, while the sum is 37.

The spelling of 620426002645 in words is "six hundred twenty billion, four hundred twenty-six million, two thousand, six hundred forty-five".