78461064 has 96 divisors (see below), whose sum is σ = 233663040. Its totient is φ = 23587200.

The previous prime is 78461039. The next prime is 78461077. The reversal of 78461064 is 46016487.

It is a super-2 number, since 2×78461064² = 12312277128024192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124029 + ... + 124659.

It is an arithmetic number, because the mean of its divisors is an integer number (2433990).

Almost surely, 2^78461064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78461064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116831520).

78461064 is an abundant number, since it is smaller than the sum of its proper divisors (155201976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78461064 is a wasteful number, since it uses less digits than its factorization.

78461064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 78461064 is about 8857.8250152055. The cubic root of 78461064 is about 428.1060819531.

The spelling of 78461064 in words is "seventy-eight million, four hundred sixty-one thousand, sixty-four".