78059945 has 8 divisors (see below), whose sum is σ = 93751944. Its totient is φ = 62394624.

The previous prime is 78059911. The next prime is 78059951. The reversal of 78059945 is 54995087.

It can be written as a sum of positive squares in 4 ways, for example, as 8637721 + 69422224 = 2939^2 + 8332^2 .

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 78059945 - 2¹⁰ = 78058921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78059945.

It is an unprimeable number.

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, 467 + ... + 12503.

It is an arithmetic number, because the mean of its divisors is an integer number (11718993).

Almost surely, 2^78059945 is an apocalyptic number.

It is an amenable number.

78059945 is a deficient number, since it is larger than the sum of its proper divisors (15691999).

78059945 is a wasteful number, since it uses less digits than its factorization.

78059945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13339.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 78059945 is about 8835.1539318792. The cubic root of 78059945 is about 427.3752950672.

The spelling of 78059945 in words is "seventy-eight million, fifty-nine thousand, nine hundred forty-five".