66507051 has 8 divisors (see below), whose sum is σ = 95497360. Its totient is φ = 40927392.

The previous prime is 66507031. The next prime is 66507107. The reversal of 66507051 is 15070566.

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

It is not a de Polignac number, because 66507051 - 2¹⁵ = 66474283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66507031) 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, 852616 + ... + 852693.

It is an arithmetic number, because the mean of its divisors is an integer number (11937170).

Almost surely, 2^66507051 is an apocalyptic number.

66507051 is a deficient number, since it is larger than the sum of its proper divisors (28990309).

66507051 is a wasteful number, since it uses less digits than its factorization.

66507051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705325.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 66507051 is about 8155.1855282391. The cubic root of 66507051 is about 405.1562695233.

The spelling of 66507051 in words is "sixty-six million, five hundred seven thousand, fifty-one".