916696321 has 16 divisors (see below), whose sum is σ = 992773584. Its totient is φ = 843208704.

The previous prime is 916696307. The next prime is 916696331. The reversal of 916696321 is 123696619.

It can be written as a sum of positive squares in 8 ways, for example, as 29550096 + 887146225 = 5436^2 + 29785^2 .

It is a de Polignac number, because none of the positive numbers 2^k-916696321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (916696331) 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, 247741 + ... + 251413.

It is an arithmetic number, because the mean of its divisors is an integer number (62048349).

Almost surely, 2^916696321 is an apocalyptic number.

It is an amenable number.

916696321 is a deficient number, since it is larger than the sum of its proper divisors (76077263).

916696321 is a wasteful number, since it uses less digits than its factorization.

916696321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020.

The product of its digits is 104976, while the sum is 43.

The square root of 916696321 is about 30276.9932622115. The cubic root of 916696321 is about 971.4232555556.

The spelling of 916696321 in words is "nine hundred sixteen million, six hundred ninety-six thousand, three hundred twenty-one".