612143616 has 240 divisors, whose sum is σ = 1989890496. Its totient is φ = 163774464.

The previous prime is 612143579. The next prime is 612143621. The reversal of 612143616 is 616341216.

It is a nude number because it is divisible by every one of its digits.

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 23 ways as a sum of consecutive naturals, for example, 3107230 + ... + 3107426.

Almost surely, 2^612143616 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 612143616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994945248).

612143616 is an abundant number, since it is smaller than the sum of its proper divisors (1377746880).

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

612143616 is a wasteful number, since it uses less digits than its factorization.

612143616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 226 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 612143616 is about 24741.5362497966. The cubic root of 612143616 is about 849.0848817951.

The spelling of 612143616 in words is "six hundred twelve million, one hundred forty-three thousand, six hundred sixteen".