761121858 has 128 divisors (see below), whose sum is σ = 1922973696. Its totient is φ = 195840000.

The previous prime is 761121853. The next prime is 761121877. The reversal of 761121858 is 858121167.

761121858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (26880) is a multiple of the sum of its prime divisors (448).

It is not an unprimeable number, because it can be changed into a prime (761121853) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3032233 + ... + 3032483.

It is an arithmetic number, because the mean of its divisors is an integer number (15023232).

Almost surely, 2^761121858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 761121858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961486848).

761121858 is an abundant number, since it is smaller than the sum of its proper divisors (1161851838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

761121858 is a wasteful number, since it uses less digits than its factorization.

761121858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448.

The product of its digits is 26880, while the sum is 39.

The square root of 761121858 is about 27588.4370343809. The cubic root of 761121858 is about 913.0293351612.

The spelling of 761121858 in words is "seven hundred sixty-one million, one hundred twenty-one thousand, eight hundred fifty-eight".