456990691 has 4 divisors (see below), whose sum is σ = 457115400. Its totient is φ = 456865984.

The previous prime is 456990673. The next prime is 456990697. The reversal of 456990691 is 196099654.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 196099654 = 2 ⋅98049827.

It is not a de Polignac number, because 456990691 - 2⁷ = 456990563 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (456990697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56686 + ... + 64243.

It is an arithmetic number, because the mean of its divisors is an integer number (114278850).

Almost surely, 2^456990691 is an apocalyptic number.

456990691 is a deficient number, since it is larger than the sum of its proper divisors (124709).

456990691 is a wasteful number, since it uses less digits than its factorization.

456990691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124708.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 456990691 is about 21377.3405969966. The cubic root of 456990691 is about 770.2572317617.

It can be divided in two parts, 45 and 6990691, that added together give a square (6990736 = 2644²).

The spelling of 456990691 in words is "four hundred fifty-six million, nine hundred ninety thousand, six hundred ninety-one".