67904998947 has 32 divisors (see below), whose sum is σ = 109310720000. Its totient is φ = 41503894560.

The previous prime is 67904998927. The next prime is 67904998961. The reversal of 67904998947 is 74989940976.

67904998947 is a `hidden beast` number, since 6 + 7 + 90 + 499 + 8 + 9 + 47 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-67904998947 is a prime.

It is a super-2 number, since 2×67904998947² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67904998907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2119072 + ... + 2150877.

It is an arithmetic number, because the mean of its divisors is an integer number (3415960000).

Almost surely, 2^67904998947 is an apocalyptic number.

67904998947 is a deficient number, since it is larger than the sum of its proper divisors (41405721053).

67904998947 is a wasteful number, since it uses less digits than its factorization.

67904998947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4270008 (or 4270002 counting only the distinct ones).

The product of its (nonzero) digits is 246903552, while the sum is 72.

The spelling of 67904998947 in words is "sixty-seven billion, nine hundred four million, nine hundred ninety-eight thousand, nine hundred forty-seven".