971713778 has 16 divisors (see below), whose sum is σ = 1763783424. Its totient is φ = 391951680.

The previous prime is 971713777. The next prime is 971713823. The reversal of 971713778 is 877317179.

It is not an unprimeable number, because it can be changed into a prime (971713777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041178 + ... + 2041653.

It is an arithmetic number, because the mean of its divisors is an integer number (110236464).

Almost surely, 2^971713778 is an apocalyptic number.

971713778 is a deficient number, since it is larger than the sum of its proper divisors (792069646).

971713778 is a wasteful number, since it uses less digits than its factorization.

971713778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082857.

The product of its digits is 518616, while the sum is 50.

The square root of 971713778 is about 31172.3239108027. The cubic root of 971713778 is about 990.4809342361.

The spelling of 971713778 in words is "nine hundred seventy-one million, seven hundred thirteen thousand, seven hundred seventy-eight".