78630563 has 16 divisors (see below), whose sum is σ = 87595872. Its totient is φ = 69984000.

The previous prime is 78630553. The next prime is 78630581. The reversal of 78630563 is 36503687.

It is a cyclic number.

It is not a de Polignac number, because 78630563 - 2⁶ = 78630499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78630553) 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, 145073 + ... + 145613.

It is an arithmetic number, because the mean of its divisors is an integer number (5474742).

Almost surely, 2^78630563 is an apocalyptic number.

78630563 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

78630563 is a deficient number, since it is larger than the sum of its proper divisors (8965309).

78630563 is a wasteful number, since it uses less digits than its factorization.

78630563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 78630563 is about 8867.3876085350. The cubic root of 78630563 is about 428.4141386240.

The spelling of 78630563 in words is "seventy-eight million, six hundred thirty thousand, five hundred sixty-three".