67416690 has 64 divisors (see below), whose sum is σ = 180652032. Its totient is φ = 15960000.

The previous prime is 67416653. The next prime is 67416709. The reversal of 67416690 is 9661476.

It is a super-2 number, since 2×67416690² = 9090020181112200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11815 + ... + 16565.

It is an arithmetic number, because the mean of its divisors is an integer number (2822688).

Almost surely, 2^67416690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67416690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90326016).

67416690 is an abundant number, since it is smaller than the sum of its proper divisors (113235342).

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

67416690 is a wasteful number, since it uses less digits than its factorization.

67416690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4815.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 67416690 is about 8210.7667120678. The cubic root of 67416690 is about 406.9950638001.

It can be divided in two parts, 6741 and 6690, that added together give a palindrome (13431).

The spelling of 67416690 in words is "sixty-seven million, four hundred sixteen thousand, six hundred ninety".