67922778 has 64 divisors (see below), whose sum is σ = 171601920. Its totient is φ = 17409600.

The previous prime is 67922759. The next prime is 67922779. The reversal of 67922778 is 87722976.

It is a super-2 number, since 2×67922778² = 9227007542474568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67922779) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35568 + ... + 37428.

It is an arithmetic number, because the mean of its divisors is an integer number (2681280).

Almost surely, 2^67922778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67922778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85800960).

67922778 is an abundant number, since it is smaller than the sum of its proper divisors (103679142).

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

67922778 is a wasteful number, since it uses less digits than its factorization.

67922778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its digits is 592704, while the sum is 48.

The square root of 67922778 is about 8241.5276496533. The cubic root of 67922778 is about 408.0109450159.

The spelling of 67922778 in words is "sixty-seven million, nine hundred twenty-two thousand, seven hundred seventy-eight".