406712661 has 8 divisors (see below), whose sum is σ = 555510144. Its totient is φ = 264528480.

The previous prime is 406712659. The next prime is 406712737. The reversal of 406712661 is 166217604.

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

It is not a de Polignac number, because 406712661 - 2¹ = 406712659 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406712161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1653181 + ... + 1653426.

It is an arithmetic number, because the mean of its divisors is an integer number (69438768).

Almost surely, 2^406712661 is an apocalyptic number.

406712661 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

406712661 is a deficient number, since it is larger than the sum of its proper divisors (148797483).

406712661 is a wasteful number, since it uses less digits than its factorization.

406712661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306651.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 406712661 is about 20167.1183117470. The cubic root of 406712661 is about 740.9050655950.

The spelling of 406712661 in words is "four hundred six million, seven hundred twelve thousand, six hundred sixty-one".