67561914 has 16 divisors (see below), whose sum is σ = 154427328. Its totient is φ = 19303392.

The previous prime is 67561883. The next prime is 67561919. The reversal of 67561914 is 41916576.

It is a super-2 number, since 2×67561914² = 9129224446686792, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67561919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804267 + ... + 804350.

It is an arithmetic number, because the mean of its divisors is an integer number (9651708).

Almost surely, 2^67561914 is an apocalyptic number.

67561914 is an abundant number, since it is smaller than the sum of its proper divisors (86865414).

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

67561914 is a wasteful number, since it uses less digits than its factorization.

67561914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608629.

The product of its digits is 45360, while the sum is 39.

The square root of 67561914 is about 8219.6054649843. The cubic root of 67561914 is about 407.2870936702.

The spelling of 67561914 in words is "sixty-seven million, five hundred sixty-one thousand, nine hundred fourteen".