67440798 has 12 divisors (see below), whose sum is σ = 146121768. Its totient is φ = 22480260.

The previous prime is 67440797. The next prime is 67440833. The reversal of 67440798 is 89704476.

It is a super-2 number, since 2×67440798² = 9096522469753608, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67440797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1873338 + ... + 1873373.

It is an arithmetic number, because the mean of its divisors is an integer number (12176814).

Almost surely, 2^67440798 is an apocalyptic number.

67440798 is an abundant number, since it is smaller than the sum of its proper divisors (78680970).

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

67440798 is a wasteful number, since it uses less digits than its factorization.

67440798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3746719 (or 3746716 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 67440798 is about 8212.2346532476. The cubic root of 67440798 is about 407.0435714108.

The spelling of 67440798 in words is "sixty-seven million, four hundred forty thousand, seven hundred ninety-eight".