6631920435 has 32 divisors (see below), whose sum is σ = 12374438400. Its totient is φ = 3031732704.

The previous prime is 6631920413. The next prime is 6631920497. The reversal of 6631920435 is 5340291366.

It is not a de Polignac number, because 6631920435 - 2¹² = 6631916339 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6631920393 and 6631920402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 639357 + ... + 649646.

It is an arithmetic number, because the mean of its divisors is an integer number (386701200).

Almost surely, 2^6631920435 is an apocalyptic number.

6631920435 is a deficient number, since it is larger than the sum of its proper divisors (5742517965).

6631920435 is a wasteful number, since it uses less digits than its factorization.

6631920435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289032 (or 1289018 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 39.

The square root of 6631920435 is about 81436.6037786449. The cubic root of 6631920435 is about 1878.7966151030.

The spelling of 6631920435 in words is "six billion, six hundred thirty-one million, nine hundred twenty thousand, four hundred thirty-five".