1656060400 has 60 divisors (see below), whose sum is σ = 4015972872. Its totient is φ = 656216320.

The previous prime is 1656060377. The next prime is 1656060401. The reversal of 1656060400 is 40606561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656060401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23454 + ... + 62146.

Almost surely, 2^1656060400 is an apocalyptic number.

1656060400 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 1656060400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2007986436).

1656060400 is an abundant number, since it is smaller than the sum of its proper divisors (2359912472).

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

1656060400 is a wasteful number, since it uses less digits than its factorization.

1656060400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38818 (or 38807 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1656060400 is about 40694.7220164974. The cubic root of 1656060400 is about 1183.1107236258.

Adding to 1656060400 its reverse (40606561), we get a palindrome (1696666961).

The spelling of 1656060400 in words is "one billion, six hundred fifty-six million, sixty thousand, four hundred".