254780623 has 2 divisors, whose sum is σ = 254780624. Its totient is φ = 254780622.

The previous prime is 254780611. The next prime is 254780629. The reversal of 254780623 is 326087452.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254780623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254780629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127390311 + 127390312.

It is an arithmetic number, because the mean of its divisors is an integer number (127390312).

Almost surely, 2^254780623 is an apocalyptic number.

254780623 is a deficient number, since it is larger than the sum of its proper divisors (1).

254780623 is an equidigital number, since it uses as much as digits as its factorization.

254780623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 254780623 is about 15961.8489843752. The cubic root of 254780623 is about 633.9506698674.

The spelling of 254780623 in words is "two hundred fifty-four million, seven hundred eighty thousand, six hundred twenty-three".