690852240 has 400 divisors, whose sum is σ = 2646705600. Its totient is φ = 165970944.

The previous prime is 690852199. The next prime is 690852257. The reversal of 690852240 is 42258096.

It is a happy number.

690852240 is a `hidden beast` number, since 6 + 90 + 8 + 522 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 690852195 and 690852204.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4970091 + ... + 4970229.

It is an arithmetic number, because the mean of its divisors is an integer number (6616764).

Almost surely, 2^690852240 is an apocalyptic number.

690852240 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 690852240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323352800).

690852240 is an abundant number, since it is smaller than the sum of its proper divisors (1955853360).

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

690852240 is a wasteful number, since it uses less digits than its factorization.

690852240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 690852240 is about 26284.0681782710. The cubic root of 690852240 is about 884.0192525307.

The spelling of 690852240 in words is "six hundred ninety million, eight hundred fifty-two thousand, two hundred forty".