258670403 has 2 divisors, whose sum is σ = 258670404. Its totient is φ = 258670402.

The previous prime is 258670339. The next prime is 258670421. The reversal of 258670403 is 304076852.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258670403 - 2⁶ = 258670339 is a prime.

It is a super-5 number, since 5×258670403⁵ (a number of 43 digits) contains 55555 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (258670483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129335201 + 129335202.

It is an arithmetic number, because the mean of its divisors is an integer number (129335202).

Almost surely, 2^258670403 is an apocalyptic number.

258670403 is a deficient number, since it is larger than the sum of its proper divisors (1).

258670403 is an equidigital number, since it uses as much as digits as its factorization.

258670403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 258670403 is about 16083.2335989999. The cubic root of 258670403 is about 637.1606009873.

The spelling of 258670403 in words is "two hundred fifty-eight million, six hundred seventy thousand, four hundred three".