1506623 has 2 divisors, whose sum is σ = 1506624. Its totient is φ = 1506622.

The previous prime is 1506619. The next prime is 1506641. The reversal of 1506623 is 3266051.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1506623 - 2² = 1506619 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1506613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 753311 + 753312.

It is an arithmetic number, because the mean of its divisors is an integer number (753312).

2^1506623 is an apocalyptic number.

1506623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1506623 is an equidigital number, since it uses as much as digits as its factorization.

1506623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1506623 is about 1227.4457218142. The cubic root of 1506623 is about 114.6396534002.

The spelling of 1506623 in words is "one million, five hundred six thousand, six hundred twenty-three".