67172093 has 4 divisors (see below), whose sum is σ = 67291968. Its totient is φ = 67052220.

The previous prime is 67172089. The next prime is 67172099. The reversal of 67172093 is 39027176.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67172093 - 2² = 67172089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67172099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59093 + ... + 60218.

It is an arithmetic number, because the mean of its divisors is an integer number (16822992).

Almost surely, 2^67172093 is an apocalyptic number.

It is an amenable number.

67172093 is a deficient number, since it is larger than the sum of its proper divisors (119875).

67172093 is a wasteful number, since it uses less digits than its factorization.

67172093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119874.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 67172093 is about 8195.8582833038. The cubic root of 67172093 is about 406.5022560186.

The spelling of 67172093 in words is "sixty-seven million, one hundred seventy-two thousand, ninety-three".