612161216 has 56 divisors (see below), whose sum is σ = 1260165120. Its totient is φ = 294739200.

The previous prime is 612161161. The next prime is 612161227.

612161216 is nontrivially palindromic in base 10.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473531 + ... + 474821.

Almost surely, 2^612161216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612161216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (630082560).

612161216 is an abundant number, since it is smaller than the sum of its proper divisors (648003904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

612161216 is a wasteful number, since it uses less digits than its factorization.

612161216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573 (or 1563 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 612161216 is about 24741.8919244265. The cubic root of 612161216 is about 849.0930191833.

The spelling of 612161216 in words is "six hundred twelve million, one hundred sixty-one thousand, two hundred sixteen".