78583061 has 4 divisors (see below), whose sum is σ = 83205612. Its totient is φ = 73960512.

The previous prime is 78583051. The next prime is 78583073. The reversal of 78583061 is 16038587.

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 27102436 + 51480625 = 5206^2 + 7175^2 .

It is a cyclic number.

It is not a de Polignac number, because 78583061 - 2¹⁸ = 78320917 is a prime.

It is a super-2 number, since 2×78583061² = 12350594952259442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78583051) 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, 2311250 + ... + 2311283.

It is an arithmetic number, because the mean of its divisors is an integer number (20801403).

Almost surely, 2^78583061 is an apocalyptic number.

It is an amenable number.

78583061 is a deficient number, since it is larger than the sum of its proper divisors (4622551).

78583061 is a wasteful number, since it uses less digits than its factorization.

78583061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4622550.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 78583061 is about 8864.7087374600. The cubic root of 78583061 is about 428.3278505996.

The spelling of 78583061 in words is "seventy-eight million, five hundred eighty-three thousand, sixty-one".