76231385 has 4 divisors (see below), whose sum is σ = 91477668. Its totient is φ = 60985104.

The previous prime is 76231381. The next prime is 76231399. The reversal of 76231385 is 58313267.

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 27175369 + 49056016 = 5213^2 + 7004^2 .

It is a cyclic number.

It is not a de Polignac number, because 76231385 - 2² = 76231381 is a prime.

It is a super-2 number, since 2×76231385² = 11622448118036450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (76231381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7623134 + ... + 7623143.

It is an arithmetic number, because the mean of its divisors is an integer number (22869417).

Almost surely, 2^76231385 is an apocalyptic number.

It is an amenable number.

76231385 is a deficient number, since it is larger than the sum of its proper divisors (15246283).

76231385 is a wasteful number, since it uses less digits than its factorization.

76231385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15246282.

The product of its digits is 30240, while the sum is 35.

The square root of 76231385 is about 8731.0586414249. The cubic root of 76231385 is about 424.0117939789.

The spelling of 76231385 in words is "seventy-six million, two hundred thirty-one thousand, three hundred eighty-five".