257073623 has 2 divisors, whose sum is σ = 257073624. Its totient is φ = 257073622.

The previous prime is 257073613. The next prime is 257073637. The reversal of 257073623 is 326370752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 257073623 - 2⁸ = 257073367 is a prime.

It is a super-2 number, since 2×257073623² = 132173695284692258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (257073613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128536811 + 128536812.

It is an arithmetic number, because the mean of its divisors is an integer number (128536812).

Almost surely, 2^257073623 is an apocalyptic number.

257073623 is a deficient number, since it is larger than the sum of its proper divisors (1).

257073623 is an equidigital number, since it uses as much as digits as its factorization.

257073623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 257073623 is about 16033.5156157344. The cubic root of 257073623 is about 635.8468235666.

The spelling of 257073623 in words is "two hundred fifty-seven million, seventy-three thousand, six hundred twenty-three".