406780573 has 4 divisors (see below), whose sum is σ = 430708860. Its totient is φ = 382852288.

The previous prime is 406780547. The next prime is 406780603. The reversal of 406780573 is 375087604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 352050169 + 54730404 = 18763^2 + 7398^2 .

It is a cyclic number.

It is not a de Polignac number, because 406780573 - 2⁵ = 406780541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406780273) 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, 11964118 + ... + 11964151.

It is an arithmetic number, because the mean of its divisors is an integer number (107677215).

Almost surely, 2^406780573 is an apocalyptic number.

It is an amenable number.

406780573 is a deficient number, since it is larger than the sum of its proper divisors (23928287).

406780573 is a wasteful number, since it uses less digits than its factorization.

406780573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23928286.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 406780573 is about 20168.8019723532. The cubic root of 406780573 is about 740.9463015415.

The spelling of 406780573 in words is "four hundred six million, seven hundred eighty thousand, five hundred seventy-three".