1615960 has 32 divisors (see below), whose sum is σ = 3693600. Its totient is φ = 636160.

The previous prime is 1615949. The next prime is 1615963. The reversal of 1615960 is 695161.

It is a super-2 number, since 2×1615960² = 5222653443200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2556 + ... + 3124.

It is an arithmetic number, because the mean of its divisors is an integer number (115425).

2^1615960 is an apocalyptic number.

1615960 is a gapful number since it is divisible by the number (10) 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 1615960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1846800).

1615960 is an abundant number, since it is smaller than the sum of its proper divisors (2077640).

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

1615960 is a wasteful number, since it uses less digits than its factorization.

1615960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 1615960 is about 1271.2041535489. The cubic root of 1615960 is about 117.3483179324.

The spelling of 1615960 in words is "one million, six hundred fifteen thousand, nine hundred sixty".