66263351 has 12 divisors (see below), whose sum is σ = 83240976. Its totient is φ = 51633120.

The previous prime is 66263333. The next prime is 66263357. The reversal of 66263351 is 15336266.

It is not a de Polignac number, because 66263351 - 2²² = 62069047 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66263357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38270 + ... + 39963.

It is an arithmetic number, because the mean of its divisors is an integer number (6936748).

Almost surely, 2^66263351 is an apocalyptic number.

66263351 is a deficient number, since it is larger than the sum of its proper divisors (16977625).

66263351 is a wasteful number, since it uses less digits than its factorization.

66263351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78262 (or 78251 counting only the distinct ones).

The product of its digits is 19440, while the sum is 32.

The square root of 66263351 is about 8140.2304021446. The cubic root of 66263351 is about 404.6607961022.

The spelling of 66263351 in words is "sixty-six million, two hundred sixty-three thousand, three hundred fifty-one".