67672971 has 36 divisors (see below), whose sum is σ = 106201368. Its totient is φ = 41375232.

The previous prime is 67672967. The next prime is 67672987. The reversal of 67672971 is 17927676.

It is not a de Polignac number, because 67672971 - 2² = 67672967 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (222264) is a multiple of the sum of its prime factors (252).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67672961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 815296 + ... + 815378.

It is an arithmetic number, because the mean of its divisors is an integer number (2950038).

Almost surely, 2^67672971 is an apocalyptic number.

67672971 is a deficient number, since it is larger than the sum of its proper divisors (38528397).

67672971 is a wasteful number, since it uses less digits than its factorization.

67672971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 176 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 67672971 is about 8226.3583072949. The cubic root of 67672971 is about 407.5101351187.

The spelling of 67672971 in words is "sixty-seven million, six hundred seventy-two thousand, nine hundred seventy-one".