67140617 has 4 divisors (see below), whose sum is σ = 67441920. Its totient is φ = 66839316.

The previous prime is 67140613. The next prime is 67140641. The reversal of 67140617 is 71604176.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67140617 - 2² = 67140613 is a prime.

It is a super-2 number, since 2×67140617² = 9015724902281378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67140613) 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, 150317 + ... + 150762.

It is an arithmetic number, because the mean of its divisors is an integer number (16860480).

Almost surely, 2^67140617 is an apocalyptic number.

It is an amenable number.

67140617 is a deficient number, since it is larger than the sum of its proper divisors (301303).

67140617 is a wasteful number, since it uses less digits than its factorization.

67140617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301302.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 67140617 is about 8193.9378201204. The cubic root of 67140617 is about 406.4387521463.

The spelling of 67140617 in words is "sixty-seven million, one hundred forty thousand, six hundred seventeen".