215416061 has 8 divisors (see below), whose sum is σ = 260671680. Its totient is φ = 173780928.

The previous prime is 215416043. The next prime is 215416063. The reversal of 215416061 is 160614512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215416061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215416061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215416063) 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, 904991 + ... + 905228.

It is an arithmetic number, because the mean of its divisors is an integer number (32583960).

Almost surely, 2^215416061 is an apocalyptic number.

It is an amenable number.

215416061 is a deficient number, since it is larger than the sum of its proper divisors (45255619).

215416061 is a wasteful number, since it uses less digits than its factorization.

215416061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810243.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 215416061 is about 14677.0590037650. The cubic root of 215416061 is about 599.4588277752.

The spelling of 215416061 in words is "two hundred fifteen million, four hundred sixteen thousand, sixty-one".