66263461 has 16 divisors (see below), whose sum is σ = 74976768. Its totient is φ = 58017600.

The previous prime is 66263443. The next prime is 66263471. The reversal of 66263461 is 16436266.

It is a cyclic number.

It is not a de Polignac number, because 66263461 - 2⁷ = 66263333 is a prime.

It is a Duffinian number.

Its product of digits (31104) is a multiple of the sum of its prime divisors (972).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66263441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107791 + ... + 108403.

It is an arithmetic number, because the mean of its divisors is an integer number (4686048).

Almost surely, 2^66263461 is an apocalyptic number.

It is an amenable number.

66263461 is a deficient number, since it is larger than the sum of its proper divisors (8713307).

66263461 is a wasteful number, since it uses less digits than its factorization.

66263461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972.

The product of its digits is 31104, while the sum is 34.

The square root of 66263461 is about 8140.2371587074. The cubic root of 66263461 is about 404.6610200202.

The spelling of 66263461 in words is "sixty-six million, two hundred sixty-three thousand, four hundred sixty-one".