66462763 has 4 divisors (see below), whose sum is σ = 68083848. Its totient is φ = 64841680.

The previous prime is 66462757. The next prime is 66462769. The reversal of 66462763 is 36726466.

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

It is an interprime number because it is at equal distance from previous prime (66462757) and next prime (66462769).

It is a cyclic number.

It is not a de Polignac number, because 66462763 - 2⁵ = 66462731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66462769) 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, 810481 + ... + 810562.

It is an arithmetic number, because the mean of its divisors is an integer number (17020962).

Almost surely, 2^66462763 is an apocalyptic number.

66462763 is a deficient number, since it is larger than the sum of its proper divisors (1621085).

66462763 is a wasteful number, since it uses less digits than its factorization.

66462763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621084.

The product of its digits is 217728, while the sum is 40.

The square root of 66462763 is about 8152.4697484873. The cubic root of 66462763 is about 405.0663164280.

It can be divided in two parts, 6646 and 2763, that added together give a square (9409 = 97²).

The spelling of 66462763 in words is "sixty-six million, four hundred sixty-two thousand, seven hundred sixty-three".