620891829471 has 16 divisors (see below), whose sum is σ = 840332065280. Its totient is φ = 407705088960.

The previous prime is 620891829463. The next prime is 620891829527. The reversal of 620891829471 is 174928198026.

It is not a de Polignac number, because 620891829471 - 2³ = 620891829463 is a prime.

It is a super-3 number, since 3×620891829471³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620891828471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1756375 + ... + 2080056.

It is an arithmetic number, because the mean of its divisors is an integer number (52520754080).

Almost surely, 2^620891829471 is an apocalyptic number.

620891829471 is a deficient number, since it is larger than the sum of its proper divisors (219440235809).

620891829471 is a wasteful number, since it uses less digits than its factorization.

620891829471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3837246.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The spelling of 620891829471 in words is "six hundred twenty billion, eight hundred ninety-one million, eight hundred twenty-nine thousand, four hundred seventy-one".