621883671497 has 16 divisors (see below), whose sum is σ = 719638852032. Its totient is φ = 531120145920.

The previous prime is 621883671491. The next prime is 621883671503. The reversal of 621883671497 is 794176388126.

It is an interprime number because it is at equal distance from previous prime (621883671491) and next prime (621883671503).

It is a cyclic number.

It is not a de Polignac number, because 621883671497 - 2⁶ = 621883671433 is a prime.

It is a super-2 number, since 2×621883671497² (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 (621883671491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2937548 + ... + 3142125.

It is an arithmetic number, because the mean of its divisors is an integer number (44977428252).

Almost surely, 2^621883671497 is an apocalyptic number.

It is an amenable number.

621883671497 is a deficient number, since it is larger than the sum of its proper divisors (97755180535).

621883671497 is a wasteful number, since it uses less digits than its factorization.

621883671497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6080248.

The product of its digits is 24385536, while the sum is 62.

The spelling of 621883671497 in words is "six hundred twenty-one billion, eight hundred eighty-three million, six hundred seventy-one thousand, four hundred ninety-seven".