206451616 has 48 divisors (see below), whose sum is σ = 466712064. Its totient is φ = 88061184.

The previous prime is 206451607. The next prime is 206451617. The reversal of 206451616 is 616154602.

It is a super-2 number, since 2×206451616² = 85244539498022912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206451617) 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, 47886 + ... + 52018.

It is an arithmetic number, because the mean of its divisors is an integer number (9723168).

Almost surely, 2^206451616 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 206451616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233356032).

206451616 is an abundant number, since it is smaller than the sum of its proper divisors (260260448).

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

206451616 is a wasteful number, since it uses less digits than its factorization.

206451616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373 (or 4365 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 206451616 is about 14368.4242699052. The cubic root of 206451616 is about 591.0253319078.

The spelling of 206451616 in words is "two hundred six million, four hundred fifty-one thousand, six hundred sixteen".