46651681 has 2 divisors, whose sum is σ = 46651682. Its totient is φ = 46651680.

The previous prime is 46651667. The next prime is 46651697. The reversal of 46651681 is 18615664.

46651681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41990400 + 4661281 = 6480^2 + 2159^2 .

It is a cyclic number.

It is not a de Polignac number, because 46651681 - 2²¹ = 44554529 is a prime.

It is a super-2 number, since 2×46651681² = 4352758680251522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 46651681.

It is not a weakly prime, because it can be changed into another prime (46651081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23325840 + 23325841.

It is an arithmetic number, because the mean of its divisors is an integer number (23325841).

Almost surely, 2^46651681 is an apocalyptic number.

It is an amenable number.

46651681 is a deficient number, since it is larger than the sum of its proper divisors (1).

46651681 is an equidigital number, since it uses as much as digits as its factorization.

46651681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 46651681 is about 6830.2035840815. The cubic root of 46651681 is about 359.9888911181.

The spelling of 46651681 in words is "forty-six million, six hundred fifty-one thousand, six hundred eighty-one".