66062407 has 4 divisors (see below), whose sum is σ = 66898720. Its totient is φ = 65226096.

The previous prime is 66062389. The next prime is 66062413. The reversal of 66062407 is 70426066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66062407 - 2¹⁹ = 65538119 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 (66062497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418038 + ... + 418195.

It is an arithmetic number, because the mean of its divisors is an integer number (16724680).

Almost surely, 2^66062407 is an apocalyptic number.

66062407 is a deficient number, since it is larger than the sum of its proper divisors (836313).

66062407 is an equidigital number, since it uses as much as digits as its factorization.

66062407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836312.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 66062407 is about 8127.8783824563. The cubic root of 66062407 is about 404.2513365153.

The spelling of 66062407 in words is "sixty-six million, sixty-two thousand, four hundred seven".