610863400 has 144 divisors (see below), whose sum is σ = 1674267840. Its totient is φ = 206640000.

The previous prime is 610863373. The next prime is 610863413. The reversal of 610863400 is 4368016.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 813025 + ... + 813775.

It is an arithmetic number, because the mean of its divisors is an integer number (11626860).

Almost surely, 2^610863400 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 610863400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (837133920).

610863400 is an abundant number, since it is smaller than the sum of its proper divisors (1063404440).

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

610863400 is a wasteful number, since it uses less digits than its factorization.

610863400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864 (or 848 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 610863400 is about 24715.6509119222. The cubic root of 610863400 is about 848.4925530866.

The spelling of 610863400 in words is "six hundred ten million, eight hundred sixty-three thousand, four hundred".