616761632 has 48 divisors (see below), whose sum is σ = 1289208312. Its totient is φ = 289443840.

The previous prime is 616761601. The next prime is 616761671. The reversal of 616761632 is 236167616.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 391881616 + 224880016 = 19796^2 + 14996^2 .

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, 227678 + ... + 230370.

Almost surely, 2^616761632 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 616761632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644604156).

616761632 is an abundant number, since it is smaller than the sum of its proper divisors (672446680).

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

616761632 is a wasteful number, since it uses less digits than its factorization.

616761632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3141 (or 3133 counting only the distinct ones).

The product of its digits is 54432, while the sum is 38.

The square root of 616761632 is about 24834.6860660649. The cubic root of 616761632 is about 851.2147025039.

The spelling of 616761632 in words is "six hundred sixteen million, seven hundred sixty-one thousand, six hundred thirty-two".