611620863 has 16 divisors (see below), whose sum is σ = 953669376. Its totient is φ = 341369280.

The previous prime is 611620859. The next prime is 611620871. The reversal of 611620863 is 368026116.

It is not a de Polignac number, because 611620863 - 2² = 611620859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611620813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337758 + ... + 339563.

It is an arithmetic number, because the mean of its divisors is an integer number (59604336).

Almost surely, 2^611620863 is an apocalyptic number.

611620863 is a deficient number, since it is larger than the sum of its proper divisors (342048513).

611620863 is a wasteful number, since it uses less digits than its factorization.

611620863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677374.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 611620863 is about 24730.9697141054. The cubic root of 611620863 is about 848.8431149581.

Adding to 611620863 its reverse (368026116), we get a palindrome (979646979).

The spelling of 611620863 in words is "six hundred eleven million, six hundred twenty thousand, eight hundred sixty-three".