537696820 has 24 divisors (see below), whose sum is σ = 1131092424. Its totient is φ = 214711296.

The previous prime is 537696799. The next prime is 537696821. The reversal of 537696820 is 28696735.

It can be written as a sum of positive squares in 4 ways, for example, as 115476516 + 422220304 = 10746^2 + 20548^2 .

It is a super-2 number, since 2×537696820² = 578235740476224800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537696821) 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, 10809 + ... + 34528.

It is an arithmetic number, because the mean of its divisors is an integer number (47128851).

Almost surely, 2^537696820 is an apocalyptic number.

It is an amenable number.

537696820 is an abundant number, since it is smaller than the sum of its proper divisors (593395604).

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

537696820 is a wasteful number, since it uses less digits than its factorization.

537696820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45939 (or 45937 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 537696820 is about 23188.2905795145. The cubic root of 537696820 is about 813.1658957635.

The spelling of 537696820 in words is "five hundred thirty-seven million, six hundred ninety-six thousand, eight hundred twenty".