610997760 has 240 divisors, whose sum is σ = 2209974624. Its totient is φ = 155713536.

The previous prime is 610997759. The next prime is 610997773. The reversal of 610997760 is 67799016.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 529344 + ... + 530496.

Almost surely, 2^610997760 is an apocalyptic number.

610997760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 610997760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1104987312).

610997760 is an abundant number, since it is smaller than the sum of its proper divisors (1598976864).

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

610997760 is a wasteful number, since it uses less digits than its factorization.

610997760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 45.

The square root of 610997760 is about 24718.3688782250. The cubic root of 610997760 is about 848.5547574474.

The spelling of 610997760 in words is "six hundred ten million, nine hundred ninety-seven thousand, seven hundred sixty".