1566150620 has 48 divisors (see below), whose sum is σ = 3492750240. Its totient is φ = 588220416.

The previous prime is 1566150617. The next prime is 1566150623. The reversal of 1566150620 is 260516651.

It is an interprime number because it is at equal distance from previous prime (1566150617) and next prime (1566150623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566150623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24704 + ... + 61176.

It is an arithmetic number, because the mean of its divisors is an integer number (72765630).

Almost surely, 2^1566150620 is an apocalyptic number.

1566150620 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 1566150620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1746375120).

1566150620 is an abundant number, since it is smaller than the sum of its proper divisors (1926599620).

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

1566150620 is a wasteful number, since it uses less digits than its factorization.

1566150620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36614 (or 36612 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1566150620 is about 39574.6209078495. The cubic root of 1566150620 is about 1161.3002216103.

The spelling of 1566150620 in words is "one billion, five hundred sixty-six million, one hundred fifty thousand, six hundred twenty".