67404669697 has 4 divisors (see below), whose sum is σ = 67522716976. Its totient is φ = 67286622420.

The previous prime is 67404669641. The next prime is 67404669701. The reversal of 67404669697 is 79696640476.

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 a de Polignac number, because none of the positive numbers 2^k-67404669697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67404639697) 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, 59022783 + ... + 59023924.

It is an arithmetic number, because the mean of its divisors is an integer number (16880679244).

Almost surely, 2^67404669697 is an apocalyptic number.

It is an amenable number.

67404669697 is a deficient number, since it is larger than the sum of its proper divisors (118047279).

67404669697 is a wasteful number, since it uses less digits than its factorization.

67404669697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118047278.

The product of its (nonzero) digits is 82301184, while the sum is 64.

The spelling of 67404669697 in words is "sixty-seven billion, four hundred four million, six hundred sixty-nine thousand, six hundred ninety-seven".