653720372 has 6 divisors (see below), whose sum is σ = 1144010658. Its totient is φ = 326860184.

The previous prime is 653720369. The next prime is 653720381. The reversal of 653720372 is 273027356.

It can be written as a sum of positive squares in only one way, i.e., 616826896 + 36893476 = 24836^2 + 6074^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 81715043 + ... + 81715050.

It is an arithmetic number, because the mean of its divisors is an integer number (190668443).

Almost surely, 2^653720372 is an apocalyptic number.

It is an amenable number.

653720372 is a deficient number, since it is larger than the sum of its proper divisors (490290286).

653720372 is a wasteful number, since it uses less digits than its factorization.

653720372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163430097 (or 163430095 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 653720372 is about 25567.9559605378. The cubic root of 653720372 is about 867.8886451330. Note that the first 3 decimals are identical.

The spelling of 653720372 in words is "six hundred fifty-three million, seven hundred twenty thousand, three hundred seventy-two".