9920714678 has 8 divisors (see below), whose sum is σ = 17006939472. Its totient is φ = 4251734856.

The previous prime is 9920714677. The next prime is 9920714681. The reversal of 9920714678 is 8764170299.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920714677) 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, 354311225 + ... + 354311252.

It is an arithmetic number, because the mean of its divisors is an integer number (2125867434).

Almost surely, 2^9920714678 is an apocalyptic number.

9920714678 is a deficient number, since it is larger than the sum of its proper divisors (7086224794).

9920714678 is a wasteful number, since it uses less digits than its factorization.

9920714678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708622486.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 9920714678 is about 99602.7844891899. The cubic root of 9920714678 is about 2148.7257405419.

The spelling of 9920714678 in words is "nine billion, nine hundred twenty million, seven hundred fourteen thousand, six hundred seventy-eight".