78580007 has 4 divisors (see below), whose sum is σ = 85723656. Its totient is φ = 71436360.

The previous prime is 78580003. The next prime is 78580097. The reversal of 78580007 is 70008587.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78580007 - 2² = 78580003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78580003) 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, 3571808 + ... + 3571829.

It is an arithmetic number, because the mean of its divisors is an integer number (21430914).

Almost surely, 2^78580007 is an apocalyptic number.

78580007 is a deficient number, since it is larger than the sum of its proper divisors (7143649).

78580007 is a wasteful number, since it uses less digits than its factorization.

78580007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7143648.

The product of its (nonzero) digits is 15680, while the sum is 35.

The square root of 78580007 is about 8864.5364797038. The cubic root of 78580007 is about 428.3223017778.

It can be divided in two parts, 78 and 580007, that added together give a palindrome (580085).

The spelling of 78580007 in words is "seventy-eight million, five hundred eighty thousand, seven".