66562007 has 4 divisors (see below), whose sum is σ = 66597336. Its totient is φ = 66526680.

The previous prime is 66561973. The next prime is 66562019. The reversal of 66562007 is 70026566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70026566 = 2 ⋅35013283.

It is a cyclic number.

It is not a de Polignac number, because 66562007 - 2⁸ = 66561751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66562087) 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, 14669 + ... + 18662.

It is an arithmetic number, because the mean of its divisors is an integer number (16649334).

Almost surely, 2^66562007 is an apocalyptic number.

66562007 is a deficient number, since it is larger than the sum of its proper divisors (35329).

66562007 is a wasteful number, since it uses less digits than its factorization.

66562007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35328.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 66562007 is about 8158.5542224098. The cubic root of 66562007 is about 405.2678348263.

The spelling of 66562007 in words is "sixty-six million, five hundred sixty-two thousand, seven".