76289261 has 4 divisors (see below), whose sum is σ = 76403292. Its totient is φ = 76175232.

The previous prime is 76289249. The next prime is 76289293. The reversal of 76289261 is 16298267.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16298267 = 3527 ⋅4621.

It can be written as a sum of positive squares in 2 ways, for example, as 10176100 + 66113161 = 3190^2 + 8131^2 .

It is a cyclic number.

It is not a de Polignac number, because 76289261 - 2⁶ = 76289197 is a prime.

It is a super-2 number, since 2×76289261² = 11640102687852242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76289231) 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, 56006 + ... + 57351.

It is an arithmetic number, because the mean of its divisors is an integer number (19100823).

Almost surely, 2^76289261 is an apocalyptic number.

It is an amenable number.

76289261 is a deficient number, since it is larger than the sum of its proper divisors (114031).

76289261 is a wasteful number, since it uses less digits than its factorization.

76289261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114030.

The product of its digits is 72576, while the sum is 41.

The square root of 76289261 is about 8734.3723872984. The cubic root of 76289261 is about 424.1190721855.

The spelling of 76289261 in words is "seventy-six million, two hundred eighty-nine thousand, two hundred sixty-one".