406616617 has 4 divisors (see below), whose sum is σ = 443581776. Its totient is φ = 369651460.

The previous prime is 406616611. The next prime is 406616629. The reversal of 406616617 is 716616604.

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 406616617 - 2¹⁹ = 406092329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406616611) 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, 18482563 + ... + 18482584.

It is an arithmetic number, because the mean of its divisors is an integer number (110895444).

Almost surely, 2^406616617 is an apocalyptic number.

It is an amenable number.

406616617 is a deficient number, since it is larger than the sum of its proper divisors (36965159).

406616617 is a wasteful number, since it uses less digits than its factorization.

406616617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36965158.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 406616617 is about 20164.7369682820. The cubic root of 406616617 is about 740.8467401522.

It can be divided in two parts, 40661 and 6617, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 406616617 in words is "four hundred six million, six hundred sixteen thousand, six hundred seventeen".