406666253 has 8 divisors (see below), whose sum is σ = 489222720. Its totient is φ = 330225120.

The previous prime is 406666241. The next prime is 406666259. The reversal of 406666253 is 352666604.

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

It is a cyclic number.

It is not a de Polignac number, because 406666253 - 2¹⁶ = 406600717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406666259) 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, 1528688 + ... + 1528953.

It is an arithmetic number, because the mean of its divisors is an integer number (61152840).

Almost surely, 2^406666253 is an apocalyptic number.

It is an amenable number.

406666253 is a deficient number, since it is larger than the sum of its proper divisors (82556467).

406666253 is a wasteful number, since it uses less digits than its factorization.

406666253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057667.

The product of its (nonzero) digits is 155520, while the sum is 38.

The square root of 406666253 is about 20165.9676931210. The cubic root of 406666253 is about 740.8768841675.

The spelling of 406666253 in words is "four hundred six million, six hundred sixty-six thousand, two hundred fifty-three".