67941540 has 72 divisors (see below), whose sum is σ = 215062848. Its totient is φ = 17328960.

The previous prime is 67941529. The next prime is 67941541. The reversal of 67941540 is 4514976.

67941540 is a `hidden beast` number, since 6 + 79 + 41 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 67941495 and 67941504.

It is not an unprimeable number, because it can be changed into a prime (67941541) 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, 4066 + ... + 12345.

It is an arithmetic number, because the mean of its divisors is an integer number (2986984).

Almost surely, 2^67941540 is an apocalyptic number.

67941540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67941540 is an abundant number, since it is smaller than the sum of its proper divisors (147121308).

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

67941540 is a wasteful number, since it uses less digits than its factorization.

67941540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16449 (or 16444 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 67941540 is about 8242.6658309069. The cubic root of 67941540 is about 408.0485092265.

The spelling of 67941540 in words is "sixty-seven million, nine hundred forty-one thousand, five hundred forty".