620546011681 has 8 divisors (see below), whose sum is σ = 629469782784. Its totient is φ = 611633676960.

The previous prime is 620546011661. The next prime is 620546011691. The reversal of 620546011681 is 186110645026.

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

It is not a de Polignac number, because 620546011681 - 2²³ = 620537623073 is a prime.

It is a super-2 number, since 2×620546011681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620546011601) 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, 2749765 + ... + 2966866.

It is an arithmetic number, because the mean of its divisors is an integer number (78683722848).

Almost surely, 2^620546011681 is an apocalyptic number.

It is an amenable number.

620546011681 is a deficient number, since it is larger than the sum of its proper divisors (8923771103).

620546011681 is a wasteful number, since it uses less digits than its factorization.

620546011681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718191.

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 620546011681 in words is "six hundred twenty billion, five hundred forty-six million, eleven thousand, six hundred eighty-one".