78148066 has 8 divisors (see below), whose sum is σ = 122318784. Its totient is φ = 37375140.

The previous prime is 78148061. The next prime is 78148073. The reversal of 78148066 is 66084187.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78148066² = 12214240439080712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78148061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849390 + ... + 849481.

It is an arithmetic number, because the mean of its divisors is an integer number (15289848).

Almost surely, 2^78148066 is an apocalyptic number.

78148066 is a deficient number, since it is larger than the sum of its proper divisors (44170718).

78148066 is a wasteful number, since it uses less digits than its factorization.

78148066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698896.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 78148066 is about 8840.1394785377. The cubic root of 78148066 is about 427.5360543216.

The spelling of 78148066 in words is "seventy-eight million, one hundred forty-eight thousand, sixty-six".