67939740 has 72 divisors (see below), whose sum is σ = 224825328. Its totient is φ = 16469760.

The previous prime is 67939681. The next prime is 67939741. The reversal of 67939740 is 4793976.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67939741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15177 + ... + 19136.

It is an arithmetic number, because the mean of its divisors is an integer number (3122574).

Almost surely, 2^67939740 is an apocalyptic number.

67939740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67939740 is an abundant number, since it is smaller than the sum of its proper divisors (156885588).

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

67939740 is a wasteful number, since it uses less digits than its factorization.

67939740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34339 (or 34334 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 67939740 is about 8242.5566422076. The cubic root of 67939740 is about 408.0449056687.

The spelling of 67939740 in words is "sixty-seven million, nine hundred thirty-nine thousand, seven hundred forty".