67880407 has 8 divisors (see below), whose sum is σ = 81660800. Its totient is φ = 55120824.

The previous prime is 67880339. The next prime is 67880411. The reversal of 67880407 is 70408876.

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

It is a de Polignac number, because none of the positive numbers 2^k-67880407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67880407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67880497) 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, 255057 + ... + 255322.

It is an arithmetic number, because the mean of its divisors is an integer number (10207600).

Almost surely, 2^67880407 is an apocalyptic number.

67880407 is a deficient number, since it is larger than the sum of its proper divisors (13780393).

67880407 is a wasteful number, since it uses less digits than its factorization.

67880407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510405.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 67880407 is about 8238.9566693848. The cubic root of 67880407 is about 407.9260867485.

The spelling of 67880407 in words is "sixty-seven million, eight hundred eighty thousand, four hundred seven".