611997472 has 12 divisors (see below), whose sum is σ = 1204870086. Its totient is φ = 305998720.

The previous prime is 611997389. The next prime is 611997473. The reversal of 611997472 is 274799116.

It can be written as a sum of positive squares in only one way, i.e., 465006096 + 146991376 = 21564^2 + 12124^2 .

It is not an unprimeable number, because it can be changed into a prime (611997473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9562429 + ... + 9562492.

Almost surely, 2^611997472 is an apocalyptic number.

It is an amenable number.

611997472 is a deficient number, since it is larger than the sum of its proper divisors (592872614).

611997472 is a wasteful number, since it uses less digits than its factorization.

611997472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19124931 (or 19124923 counting only the distinct ones).

The product of its digits is 190512, while the sum is 46.

The square root of 611997472 is about 24738.5826594815. The cubic root of 611997472 is about 849.0173058570.

The spelling of 611997472 in words is "six hundred eleven million, nine hundred ninety-seven thousand, four hundred seventy-two".