451661346 has 20 divisors (see below), whose sum is σ = 1012056342. Its totient is φ = 150553728.

The previous prime is 451661333. The next prime is 451661359. The reversal of 451661346 is 643166154.

It is a happy number.

451661346 is a `hidden beast` number, since 4 + 516 + 6 + 134 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (451661333) and next prime (451661359).

It can be written as a sum of positive squares in only one way, i.e., 319158225 + 132503121 = 17865^2 + 11511^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 451661346.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1393855 + ... + 1394178.

Almost surely, 2^451661346 is an apocalyptic number.

451661346 is an abundant number, since it is smaller than the sum of its proper divisors (560394996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451661346 is a wasteful number, since it uses less digits than its factorization.

451661346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2788047 (or 2788038 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 451661346 is about 21252.3256609718. The cubic root of 451661346 is about 767.2513150592.

The spelling of 451661346 in words is "four hundred fifty-one million, six hundred sixty-one thousand, three hundred forty-six".