216040737 has 8 divisors (see below), whose sum is σ = 314241120. Its totient is φ = 130933760.

The previous prime is 216040687. The next prime is 216040739. The reversal of 216040737 is 737040612.

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

It is a cyclic number.

It is not a de Polignac number, because 216040737 - 2⁷ = 216040609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216040739) 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, 3273312 + ... + 3273377.

It is an arithmetic number, because the mean of its divisors is an integer number (39280140).

Almost surely, 2^216040737 is an apocalyptic number.

It is an amenable number.

216040737 is a deficient number, since it is larger than the sum of its proper divisors (98200383).

216040737 is a wasteful number, since it uses less digits than its factorization.

216040737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6546703.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 216040737 is about 14698.3242922450. The cubic root of 216040737 is about 600.0377170734.

The spelling of 216040737 in words is "two hundred sixteen million, forty thousand, seven hundred thirty-seven".