67712040 has 96 divisors (see below), whose sum is σ = 240084000. Its totient is φ = 16414080.

The previous prime is 67712017. The next prime is 67712041. The reversal of 67712040 is 4021776.

It is a junction number, because it is equal to n+sod(n) for n = 67711995 and 67712013.

It is not an unprimeable number, because it can be changed into a prime (67712041) 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, 4590 + ... + 12509.

It is an arithmetic number, because the mean of its divisors is an integer number (2500875).

Almost surely, 2^67712040 is an apocalyptic number.

67712040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67712040 is an abundant number, since it is smaller than the sum of its proper divisors (172371960).

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

67712040 is a wasteful number, since it uses less digits than its factorization.

67712040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17127 (or 17120 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 67712040 is about 8228.7325877075. The cubic root of 67712040 is about 407.5885413636.

The spelling of 67712040 in words is "sixty-seven million, seven hundred twelve thousand, forty".