6987172401 has 16 divisors (see below), whose sum is σ = 11292400320. Its totient is φ = 4234649760.

The previous prime is 6987172393. The next prime is 6987172403. The reversal of 6987172401 is 1042717896.

It is a happy number.

It is not a de Polignac number, because 6987172401 - 2³ = 6987172393 is a prime.

It is a super-2 number, since 2×6987172401² = 97641156322592209602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6987172403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11762620 + ... + 11763213.

It is an arithmetic number, because the mean of its divisors is an integer number (705775020).

Almost surely, 2^6987172401 is an apocalyptic number.

It is an amenable number.

6987172401 is a deficient number, since it is larger than the sum of its proper divisors (4305227919).

6987172401 is a wasteful number, since it uses less digits than its factorization.

6987172401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23525853 (or 23525847 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 6987172401 is about 83589.3079346874. The cubic root of 6987172401 is about 1911.7619771371.

The spelling of 6987172401 in words is "six billion, nine hundred eighty-seven million, one hundred seventy-two thousand, four hundred one".