7705420 has 48 divisors (see below), whose sum is σ = 17363808. Its totient is φ = 2862080.

The previous prime is 7705409. The next prime is 7705427. The reversal of 7705420 is 245077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7705427) 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, 44454 + ... + 44626.

It is an arithmetic number, because the mean of its divisors is an integer number (361746).

Almost surely, 2^7705420 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 7705420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8681904).

7705420 is an abundant number, since it is smaller than the sum of its proper divisors (9658388).

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

7705420 is a wasteful number, since it uses less digits than its factorization.

7705420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 7705420 is about 2775.8638295133. The cubic root of 7705420 is about 197.5144036923.

The spelling of 7705420 in words is "seven million, seven hundred five thousand, four hundred twenty".