610999680 has 64 divisors (see below), whose sum is σ = 1947567600. Its totient is φ = 162932736.

The previous prime is 610999673. The next prime is 610999687. The reversal of 610999680 is 86999016.

It is an interprime number because it is at equal distance from previous prime (610999673) and next prime (610999687).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610999687) 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, 157195 + ... + 161034.

Almost surely, 2^610999680 is an apocalyptic number.

610999680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

610999680 is an abundant number, since it is smaller than the sum of its proper divisors (1336567920).

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

610999680 is a wasteful number, since it uses less digits than its factorization.

610999680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318251 (or 318239 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 610999680 is about 24718.4077157086. The cubic root of 610999680 is about 848.5556462796. Note that the first 3 decimals are identical.

The spelling of 610999680 in words is "six hundred ten million, nine hundred ninety-nine thousand, six hundred eighty".