761571421 has 4 divisors (see below), whose sum is σ = 820153852. Its totient is φ = 702988992.

The previous prime is 761571413. The next prime is 761571439. The reversal of 761571421 is 124175167.

761571421 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.

It can be written as a sum of positive squares in 2 ways, for example, as 89984196 + 671587225 = 9486^2 + 25915^2 .

It is a cyclic number.

It is not a de Polignac number, because 761571421 - 2³ = 761571413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761571401) 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, 29291196 + ... + 29291221.

It is an arithmetic number, because the mean of its divisors is an integer number (205038463).

Almost surely, 2^761571421 is an apocalyptic number.

It is an amenable number.

761571421 is a deficient number, since it is larger than the sum of its proper divisors (58582431).

761571421 is a wasteful number, since it uses less digits than its factorization.

761571421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58582430.

The product of its digits is 11760, while the sum is 34.

The square root of 761571421 is about 27596.5835023106. The cubic root of 761571421 is about 913.2090625879.

The spelling of 761571421 in words is "seven hundred sixty-one million, five hundred seventy-one thousand, four hundred twenty-one".