78748007 has 16 divisors (see below), whose sum is σ = 87373440. Its totient is φ = 70513632.

The previous prime is 78747997. The next prime is 78748009. The reversal of 78748007 is 70084787.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 78748007 - 2¹² = 78743911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78748009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99668 + ... + 100454.

It is an arithmetic number, because the mean of its divisors is an integer number (5460840).

Almost surely, 2^78748007 is an apocalyptic number.

78748007 is a deficient number, since it is larger than the sum of its proper divisors (8625433).

78748007 is a wasteful number, since it uses less digits than its factorization.

78748007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 87808, while the sum is 41.

The square root of 78748007 is about 8874.0073811103. The cubic root of 78748007 is about 428.6273281636.

The spelling of 78748007 in words is "seventy-eight million, seven hundred forty-eight thousand, seven".