6398862974 has 12 divisors (see below), whose sum is σ = 10969992504. Its totient is φ = 2742241572.

The previous prime is 6398862971. The next prime is 6398862983. The reversal of 6398862974 is 4792688936.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6398862971) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288617 + ... + 309995.

It is an arithmetic number, because the mean of its divisors is an integer number (914166042).

Almost surely, 2^6398862974 is an apocalyptic number.

6398862974 is a deficient number, since it is larger than the sum of its proper divisors (4571129530).

6398862974 is an frugal number, since it uses more digits than its factorization.

6398862974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42767 (or 21388 counting only the distinct ones).

The product of its digits is 31352832, while the sum is 62.

The square root of 6398862974 is about 79992.8932718401. The cubic root of 6398862974 is about 1856.5255767835.

The spelling of 6398862974 in words is "six billion, three hundred ninety-eight million, eight hundred sixty-two thousand, nine hundred seventy-four".