406752623 has 4 divisors (see below), whose sum is σ = 407050248. Its totient is φ = 406455000.

The previous prime is 406752613. The next prime is 406752629. The reversal of 406752623 is 326257604.

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

It is a cyclic number.

It is not a de Polignac number, because 406752623 - 2⁴ = 406752607 is a prime.

It is a super-3 number, since 3×406752623³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406752629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146753 + ... + 149498.

It is an arithmetic number, because the mean of its divisors is an integer number (101762562).

Almost surely, 2^406752623 is an apocalyptic number.

406752623 is a deficient number, since it is larger than the sum of its proper divisors (297625).

406752623 is a wasteful number, since it uses less digits than its factorization.

406752623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297624.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 406752623 is about 20168.1090586103. The cubic root of 406752623 is about 740.9293309478.

The spelling of 406752623 in words is "four hundred six million, seven hundred fifty-two thousand, six hundred twenty-three".