690065760 has 96 divisors (see below), whose sum is σ = 2196264672. Its totient is φ = 182108160.

The previous prime is 690065749. The next prime is 690065809. The reversal of 690065760 is 67560096.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39150 + ... + 53970.

It is an arithmetic number, because the mean of its divisors is an integer number (22877757).

Almost surely, 2^690065760 is an apocalyptic number.

690065760 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 690065760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1098132336).

690065760 is an abundant number, since it is smaller than the sum of its proper divisors (1506198912).

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

690065760 is a wasteful number, since it uses less digits than its factorization.

690065760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14936 (or 14928 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 690065760 is about 26269.1027635129. The cubic root of 690065760 is about 883.6836634219.

The spelling of 690065760 in words is "six hundred ninety million, sixty-five thousand, seven hundred sixty".