67339540 has 12 divisors (see below), whose sum is σ = 141413076. Its totient is φ = 26935808.

The previous prime is 67339501. The next prime is 67339543. The reversal of 67339540 is 4593376.

It can be written as a sum of positive squares in 2 ways, for example, as 12194064 + 55145476 = 3492^2 + 7426^2 .

It is a super-2 number, since 2×67339540² = 9069227294823200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67339540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67339543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1683469 + ... + 1683508.

It is an arithmetic number, because the mean of its divisors is an integer number (11784423).

Almost surely, 2^67339540 is an apocalyptic number.

It is an amenable number.

67339540 is an abundant number, since it is smaller than the sum of its proper divisors (74073536).

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

67339540 is a wasteful number, since it uses less digits than its factorization.

67339540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3366986 (or 3366984 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 67339540 is about 8206.0672675771. The cubic root of 67339540 is about 406.8397528305.

The spelling of 67339540 in words is "sixty-seven million, three hundred thirty-nine thousand, five hundred forty".