66073015 has 8 divisors (see below), whose sum is σ = 79360848. Its totient is φ = 52809600.

The previous prime is 66073001. The next prime is 66073019. The reversal of 66073015 is 51037066.

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

It is a de Polignac number, because none of the positive numbers 2^k-66073015 is a prime.

It is a super-2 number, since 2×66073015² = 8731286622380450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66073019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504 + ... + 11506.

It is an arithmetic number, because the mean of its divisors is an integer number (9920106).

Almost surely, 2^66073015 is an apocalyptic number.

66073015 is a deficient number, since it is larger than the sum of its proper divisors (13287833).

66073015 is a wasteful number, since it uses less digits than its factorization.

66073015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12209.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 66073015 is about 8128.5309250811. The cubic root of 66073015 is about 404.2729729692.

The spelling of 66073015 in words is "sixty-six million, seventy-three thousand, fifteen".