8145620 has 48 divisors (see below), whose sum is σ = 19813248. Its totient is φ = 2755200.

The previous prime is 8145583. The next prime is 8145629. The reversal of 8145620 is 265418.

8145620 = T₄₄₇ + T₄₄₈ + ... + T₅₁₆.

It is a super-2 number, since 2×8145620² = 132702250368800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8145620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145629) 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, 11270 + ... + 11970.

It is an arithmetic number, because the mean of its divisors is an integer number (412776).

Almost surely, 2^8145620 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 8145620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9906624).

8145620 is an abundant number, since it is smaller than the sum of its proper divisors (11667628).

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

8145620 is a wasteful number, since it uses less digits than its factorization.

8145620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 8145620 is about 2854.0532580875. The cubic root of 8145620 is about 201.2062106545.

The spelling of 8145620 in words is "eight million, one hundred forty-five thousand, six hundred twenty".