67491140 has 12 divisors (see below), whose sum is σ = 141731436. Its totient is φ = 26996448.

The previous prime is 67491119. The next prime is 67491143. The reversal of 67491140 is 4119476.

It can be written as a sum of positive squares in 2 ways, for example, as 34128964 + 33362176 = 5842^2 + 5776^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67491097 and 67491106.

It is not an unprimeable number, because it can be changed into a prime (67491143) 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, 1687259 + ... + 1687298.

It is an arithmetic number, because the mean of its divisors is an integer number (11810953).

Almost surely, 2^67491140 is an apocalyptic number.

It is an amenable number.

67491140 is an abundant number, since it is smaller than the sum of its proper divisors (74240296).

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

67491140 is a wasteful number, since it uses less digits than its factorization.

67491140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3374566 (or 3374564 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 67491140 is about 8215.2991424537. The cubic root of 67491140 is about 407.1448270875.

The spelling of 67491140 in words is "sixty-seven million, four hundred ninety-one thousand, one hundred forty".