67690401 has 8 divisors (see below), whose sum is σ = 91341600. Its totient is φ = 44583072.

The previous prime is 67690397. The next prime is 67690409. The reversal of 67690401 is 10409676.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67690401 - 2² = 67690397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67690409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135676 + ... + 136173.

It is an arithmetic number, because the mean of its divisors is an integer number (11417700).

Almost surely, 2^67690401 is an apocalyptic number.

It is an amenable number.

67690401 is a deficient number, since it is larger than the sum of its proper divisors (23651199).

67690401 is a wasteful number, since it uses less digits than its factorization.

67690401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271935.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 67690401 is about 8227.4176386033. The cubic root of 67690401 is about 407.5451185192.

The spelling of 67690401 in words is "sixty-seven million, six hundred ninety thousand, four hundred one".