46406781 has 6 divisors (see below), whose sum is σ = 67032030. Its totient is φ = 30937848.

The previous prime is 46406749. The next prime is 46406803. The reversal of 46406781 is 18760464.

46406781 is a `hidden beast` number, since 4 + 640 + 6 + 7 + 8 + 1 = 666.

46406781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 27562500 + 18844281 = 5250^2 + 4341^2 .

It is not a de Polignac number, because 46406781 - 2⁵ = 46406749 is a prime.

It is a super-2 number, since 2×46406781² = 4307178645563922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (46406741) 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 in 5 ways as a sum of consecutive naturals, for example, 2578146 + ... + 2578163.

It is an arithmetic number, because the mean of its divisors is an integer number (11172005).

Almost surely, 2^46406781 is an apocalyptic number.

It is an amenable number.

46406781 is a deficient number, since it is larger than the sum of its proper divisors (20625249).

46406781 is a wasteful number, since it uses less digits than its factorization.

46406781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156315 (or 5156312 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 46406781 is about 6812.2522707252. The cubic root of 46406781 is about 359.3578599109.

The spelling of 46406781 in words is "forty-six million, four hundred six thousand, seven hundred eighty-one".