67742707 has 4 divisors (see below), whose sum is σ = 67856400. Its totient is φ = 67629016.

The previous prime is 67742693. The next prime is 67742711. The reversal of 67742707 is 70724776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67742707 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 67742707.

It is not an unprimeable number, because it can be changed into a prime (67742747) 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, 55948 + ... + 57145.

It is an arithmetic number, because the mean of its divisors is an integer number (16964100).

Almost surely, 2^67742707 is an apocalyptic number.

67742707 is a deficient number, since it is larger than the sum of its proper divisors (113693).

67742707 is a wasteful number, since it uses less digits than its factorization.

67742707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113692.

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 67742707 is about 8230.5957864543. The cubic root of 67742707 is about 407.6500647955.

The spelling of 67742707 in words is "sixty-seven million, seven hundred forty-two thousand, seven hundred seven".