172038663 has 12 divisors (see below), whose sum is σ = 249493608. Its totient is φ = 114234000.

The previous prime is 172038661. The next prime is 172038667. The reversal of 172038663 is 366830271.

It is a happy number.

It is not a de Polignac number, because 172038663 - 2¹ = 172038661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172038661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35820 + ... + 40337.

It is an arithmetic number, because the mean of its divisors is an integer number (20791134).

Almost surely, 2^172038663 is an apocalyptic number.

172038663 is a deficient number, since it is larger than the sum of its proper divisors (77454945).

172038663 is a wasteful number, since it uses less digits than its factorization.

172038663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76414 (or 76411 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 172038663 is about 13116.3509788355. The cubic root of 172038663 is about 556.1714433860.

The spelling of 172038663 in words is "one hundred seventy-two million, thirty-eight thousand, six hundred sixty-three".