3069640 has 64 divisors (see below), whose sum is σ = 8323200. Its totient is φ = 995328.

The previous prime is 3069637. The next prime is 3069643. The reversal of 3069640 is 469603.

It is an interprime number because it is at equal distance from previous prime (3069637) and next prime (3069643).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 3069599 and 3069608.

It is not an unprimeable number, because it can be changed into a prime (3069643) 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, 5032 + ... + 5608.

It is an arithmetic number, because the mean of its divisors is an integer number (130050).

Almost surely, 2^3069640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3069640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4161600).

3069640 is an abundant number, since it is smaller than the sum of its proper divisors (5253560).

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

3069640 is a wasteful number, since it uses less digits than its factorization.

3069640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3069640 is about 1752.0388123555. The cubic root of 3069640 is about 145.3324121555.

The spelling of 3069640 in words is "three million, sixty-nine thousand, six hundred forty".