76490257 has 8 divisors (see below), whose sum is σ = 80615360. Its totient is φ = 72375120.

The previous prime is 76490233. The next prime is 76490261. The reversal of 76490257 is 75209467.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 76490257 - 2¹⁹ = 75965969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76490207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17428 + ... + 21370.

It is an arithmetic number, because the mean of its divisors is an integer number (10076920).

Almost surely, 2^76490257 is an apocalyptic number.

It is an amenable number.

76490257 is a deficient number, since it is larger than the sum of its proper divisors (4125103).

76490257 is a wasteful number, since it uses less digits than its factorization.

76490257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4983.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 76490257 is about 8745.8708542946. The cubic root of 76490257 is about 424.4912149155.

The spelling of 76490257 in words is "seventy-six million, four hundred ninety thousand, two hundred fifty-seven".