76407217 has 4 divisors (see below), whose sum is σ = 76447476. Its totient is φ = 76366960.

The previous prime is 76407193. The next prime is 76407239. The reversal of 76407217 is 71270467.

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 34468641 + 41938576 = 5871^2 + 6476^2 .

It is a cyclic number.

It is not a de Polignac number, because 76407217 - 2¹⁵ = 76374449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76417217) 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, 17134 + ... + 21127.

It is an arithmetic number, because the mean of its divisors is an integer number (19111869).

Almost surely, 2^76407217 is an apocalyptic number.

It is an amenable number.

76407217 is a deficient number, since it is larger than the sum of its proper divisors (40259).

76407217 is a wasteful number, since it uses less digits than its factorization.

76407217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40258.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 76407217 is about 8741.1221819627. The cubic root of 76407217 is about 424.3375460448.

The spelling of 76407217 in words is "seventy-six million, four hundred seven thousand, two hundred seventeen".