76984505 has 8 divisors (see below), whose sum is σ = 99487752. Its totient is φ = 56850048.

The previous prime is 76984477. The next prime is 76984507. The reversal of 76984505 is 50548967.

It can be written as a sum of positive squares in 4 ways, for example, as 8111104 + 68873401 = 2848^2 + 8299^2 .

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 76984505 - 2⁶ = 76984441 is a prime.

It is a super-2 number, since 2×76984505² = 11853228020190050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (76984507) 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 7 ways as a sum of consecutive naturals, for example, 592124 + ... + 592253.

It is an arithmetic number, because the mean of its divisors is an integer number (12435969).

Almost surely, 2^76984505 is an apocalyptic number.

It is an amenable number.

76984505 is a deficient number, since it is larger than the sum of its proper divisors (22503247).

76984505 is a wasteful number, since it uses less digits than its factorization.

76984505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184395.

The product of its (nonzero) digits is 302400, while the sum is 44.

The square root of 76984505 is about 8774.0814334037. The cubic root of 76984505 is about 425.4035474967.

The spelling of 76984505 in words is "seventy-six million, nine hundred eighty-four thousand, five hundred five".