611421652 has 12 divisors (see below), whose sum is σ = 1081019380. Its totient is φ = 302558976.

The previous prime is 611421641. The next prime is 611421659. The reversal of 611421652 is 256124116.

It can be written as a sum of positive squares in 2 ways, for example, as 344622096 + 266799556 = 18564^2 + 16334^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 611421652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611421659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787527 + ... + 788302.

Almost surely, 2^611421652 is an apocalyptic number.

It is an amenable number.

611421652 is a deficient number, since it is larger than the sum of its proper divisors (469597728).

611421652 is a wasteful number, since it uses less digits than its factorization.

611421652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575930 (or 1575928 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 611421652 is about 24726.9418246576. The cubic root of 611421652 is about 848.7509460681.

Adding to 611421652 its reverse (256124116), we get a palindrome (867545768).

The spelling of 611421652 in words is "six hundred eleven million, four hundred twenty-one thousand, six hundred fifty-two".