67670091 has 12 divisors (see below), whose sum is σ = 98244432. Its totient is φ = 44883216.

The previous prime is 67670087. The next prime is 67670093. The reversal of 67670091 is 19007676.

It is not a de Polignac number, because 67670091 - 2² = 67670087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67670093) 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, 17311 + ... + 20856.

It is an arithmetic number, because the mean of its divisors is an integer number (8187036).

Almost surely, 2^67670091 is an apocalyptic number.

67670091 is a deficient number, since it is larger than the sum of its proper divisors (30574341).

67670091 is a wasteful number, since it uses less digits than its factorization.

67670091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38370 (or 38367 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 67670091 is about 8226.1832583526. The cubic root of 67670091 is about 407.5043541507.

The spelling of 67670091 in words is "sixty-seven million, six hundred seventy thousand, ninety-one".