78610667 has 2 divisors, whose sum is σ = 78610668. Its totient is φ = 78610666.

The previous prime is 78610627. The next prime is 78610673. The reversal of 78610667 is 76601687.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78610667 - 2⁶ = 78610603 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78610627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39305333 + 39305334.

It is an arithmetic number, because the mean of its divisors is an integer number (39305334).

Almost surely, 2^78610667 is an apocalyptic number.

78610667 is a deficient number, since it is larger than the sum of its proper divisors (1).

78610667 is an equidigital number, since it uses as much as digits as its factorization.

78610667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 78610667 is about 8866.2656738900. The cubic root of 78610667 is about 428.3780015021.

The spelling of 78610667 in words is "seventy-eight million, six hundred ten thousand, six hundred sixty-seven".