78061005 has 48 divisors (see below), whose sum is σ = 148599360. Its totient is φ = 37593600.

The previous prime is 78061003. The next prime is 78061033. The reversal of 78061005 is 50016087.

It is not a de Polignac number, because 78061005 - 2¹ = 78061003 is a prime.

It is a super-2 number, since 2×78061005² = 12187041003220050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78061005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78061001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 88165 + ... + 89045.

It is an arithmetic number, because the mean of its divisors is an integer number (3095820).

Almost surely, 2^78061005 is an apocalyptic number.

It is an amenable number.

78061005 is a deficient number, since it is larger than the sum of its proper divisors (70538355).

78061005 is a wasteful number, since it uses less digits than its factorization.

78061005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 78061005 is about 8835.2139193117. The cubic root of 78061005 is about 427.3772295453.

The spelling of 78061005 in words is "seventy-eight million, sixty-one thousand, five".