67240715 has 8 divisors (see below), whose sum is σ = 84935760. Its totient is φ = 50961312.

The previous prime is 67240711. The next prime is 67240717. The reversal of 67240715 is 51704276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 67240715 - 2² = 67240711 is a prime.

It is a super-2 number, since 2×67240715² = 9042627507422450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67240711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 353804 + ... + 353993.

It is an arithmetic number, because the mean of its divisors is an integer number (10616970).

Almost surely, 2^67240715 is an apocalyptic number.

67240715 is a deficient number, since it is larger than the sum of its proper divisors (17695045).

67240715 is a wasteful number, since it uses less digits than its factorization.

67240715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707821.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 67240715 is about 8200.0435974451. The cubic root of 67240715 is about 406.6406344380.

The spelling of 67240715 in words is "sixty-seven million, two hundred forty thousand, seven hundred fifteen".