67967820 has 36 divisors (see below), whose sum is σ = 206169600. Its totient is φ = 18124704.

The previous prime is 67967797. The next prime is 67967833. The reversal of 67967820 is 2876976.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188620 + ... + 188979.

Almost surely, 2^67967820 is an apocalyptic number.

67967820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67967820 is an abundant number, since it is smaller than the sum of its proper divisors (138201780).

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

67967820 is a wasteful number, since it uses less digits than its factorization.

67967820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377614 (or 377609 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 67967820 is about 8244.2598212332. The cubic root of 67967820 is about 408.1011139240.

The spelling of 67967820 in words is "sixty-seven million, nine hundred sixty-seven thousand, eight hundred twenty".