690335040 has 112 divisors (see below), whose sum is σ = 2245400640. Its totient is φ = 179589120.

The previous prime is 690335039. The next prime is 690335047. The reversal of 690335040 is 40533096.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 690334989 and 690335007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690335047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30591 + ... + 48129.

It is an arithmetic number, because the mean of its divisors is an integer number (20048220).

Almost surely, 2^690335040 is an apocalyptic number.

690335040 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 690335040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1122700320).

690335040 is an abundant number, since it is smaller than the sum of its proper divisors (1555065600).

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

690335040 is a wasteful number, since it uses less digits than its factorization.

690335040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17600 (or 17590 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 690335040 is about 26274.2276765655. The cubic root of 690335040 is about 883.7985932373.

The spelling of 690335040 in words is "six hundred ninety million, three hundred thirty-five thousand, forty".