406277623 has 2 divisors, whose sum is σ = 406277624. Its totient is φ = 406277622.

The previous prime is 406277603. The next prime is 406277633. The reversal of 406277623 is 326772604.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406277623 - 2⁹ = 406277111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406277603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203138811 + 203138812.

It is an arithmetic number, because the mean of its divisors is an integer number (203138812).

Almost surely, 2^406277623 is an apocalyptic number.

406277623 is a deficient number, since it is larger than the sum of its proper divisors (1).

406277623 is an equidigital number, since it uses as much as digits as its factorization.

406277623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 406277623 is about 20156.3296013932. The cubic root of 406277623 is about 740.6408029837.

The spelling of 406277623 in words is "four hundred six million, two hundred seventy-seven thousand, six hundred twenty-three".