46661681 has 8 divisors (see below), whose sum is σ = 51664224. Its totient is φ = 41785920.

The previous prime is 46661669. The next prime is 46661689. The reversal of 46661681 is 18616664.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 46661681 - 2¹⁰ = 46660657 is a prime.

It is a super-2 number, since 2×46661681² = 4354624947491522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46661689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30920 + ... + 32393.

It is an arithmetic number, because the mean of its divisors is an integer number (6458028).

Almost surely, 2^46661681 is an apocalyptic number.

It is an amenable number.

46661681 is a deficient number, since it is larger than the sum of its proper divisors (5002543).

46661681 is a wasteful number, since it uses less digits than its factorization.

46661681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63391.

The product of its digits is 41472, while the sum is 38.

The square root of 46661681 is about 6830.9355874580. The cubic root of 46661681 is about 360.0146110325.

The spelling of 46661681 in words is "forty-six million, six hundred sixty-one thousand, six hundred eighty-one".