67806534 has 16 divisors (see below), whose sum is σ = 135696960. Its totient is φ = 22588200.

The previous prime is 67806527. The next prime is 67806539. The reversal of 67806534 is 43560876.

It is a junction number, because it is equal to n+sod(n) for n = 67806492 and 67806501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67806539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13009 + ... + 17459.

It is an arithmetic number, because the mean of its divisors is an integer number (8481060).

Almost surely, 2^67806534 is an apocalyptic number.

67806534 is an abundant number, since it is smaller than the sum of its proper divisors (67890426).

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

67806534 is a wasteful number, since it uses less digits than its factorization.

67806534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6995.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 67806534 is about 8234.4722963891. The cubic root of 67806534 is about 407.7780535459.

The spelling of 67806534 in words is "sixty-seven million, eight hundred six thousand, five hundred thirty-four".