451223685 has 48 divisors (see below), whose sum is σ = 898148160. Its totient is φ = 207256320.

The previous prime is 451223677. The next prime is 451223687. The reversal of 451223685 is 586322154.

It is not a de Polignac number, because 451223685 - 2³ = 451223677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451223687) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14584 + ... + 33393.

It is an arithmetic number, because the mean of its divisors is an integer number (18711420).

Almost surely, 2^451223685 is an apocalyptic number.

451223685 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

451223685 is a deficient number, since it is larger than the sum of its proper divisors (446924475).

451223685 is a wasteful number, since it uses less digits than its factorization.

451223685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48018 (or 48015 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 451223685 is about 21242.0263863879. The cubic root of 451223685 is about 767.0034121400.

The spelling of 451223685 in words is "four hundred fifty-one million, two hundred twenty-three thousand, six hundred eighty-five".