258420761 has 4 divisors (see below), whose sum is σ = 258622224. Its totient is φ = 258219300.

The previous prime is 258420751. The next prime is 258420763. The reversal of 258420761 is 167024852.

258420761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 258420761 - 2⁶ = 258420697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (258420763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98795 + ... + 101376.

It is an arithmetic number, because the mean of its divisors is an integer number (64655556).

Almost surely, 2^258420761 is an apocalyptic number.

It is an amenable number.

258420761 is a deficient number, since it is larger than the sum of its proper divisors (201463).

258420761 is a wasteful number, since it uses less digits than its factorization.

258420761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201462.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 258420761 is about 16075.4707862632. The cubic root of 258420761 is about 636.9555611084.

The spelling of 258420761 in words is "two hundred fifty-eight million, four hundred twenty thousand, seven hundred sixty-one".