65940715 has 8 divisors (see below), whose sum is σ = 80969328. Its totient is φ = 51525600.

The previous prime is 65940713. The next prime is 65940737. The reversal of 65940715 is 51704956.

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

It is not a de Polignac number, because 65940715 - 2¹ = 65940713 is a prime.

It is a super-2 number, since 2×65940715² = 8696355789422450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65940713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153136 + ... + 153565.

It is an arithmetic number, because the mean of its divisors is an integer number (10121166).

Almost surely, 2^65940715 is an apocalyptic number.

65940715 is a deficient number, since it is larger than the sum of its proper divisors (15028613).

65940715 is a wasteful number, since it uses less digits than its factorization.

65940715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306749.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 65940715 is about 8120.3888453694. The cubic root of 65940715 is about 404.0029633315.

The spelling of 65940715 in words is "sixty-five million, nine hundred forty thousand, seven hundred fifteen".