46321681 has 4 divisors (see below), whose sum is σ = 52939072. Its totient is φ = 39704292.

The previous prime is 46321679. The next prime is 46321687. The reversal of 46321681 is 18612364.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 46321681 - 2¹ = 46321679 is a prime.

It is a super-2 number, since 2×46321681² = 4291396261331522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46321687) 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, 3308685 + ... + 3308698.

It is an arithmetic number, because the mean of its divisors is an integer number (13234768).

Almost surely, 2^46321681 is an apocalyptic number.

It is an amenable number.

46321681 is a deficient number, since it is larger than the sum of its proper divisors (6617391).

46321681 is an equidigital number, since it uses as much as digits as its factorization.

46321681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6617390.

The product of its digits is 6912, while the sum is 31.

The square root of 46321681 is about 6806.0033059058. The cubic root of 46321681 is about 359.1380639711.

The spelling of 46321681 in words is "forty-six million, three hundred twenty-one thousand, six hundred eighty-one".