67427740 has 24 divisors (see below), whose sum is σ = 141961680. Its totient is φ = 26901888.

The previous prime is 67427719. The next prime is 67427783. The reversal of 67427740 is 4772476.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 67427740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4059 + ... + 12301.

It is an arithmetic number, because the mean of its divisors is an integer number (5915070).

Almost surely, 2^67427740 is an apocalyptic number.

It is an amenable number.

67427740 is an abundant number, since it is smaller than the sum of its proper divisors (74533940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67427740 is a wasteful number, since it uses less digits than its factorization.

67427740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661 (or 8659 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 67427740 is about 8211.4395814619. The cubic root of 67427740 is about 407.0172988963.

The spelling of 67427740 in words is "sixty-seven million, four hundred twenty-seven thousand, seven hundred forty".