612001652 has 6 divisors (see below), whose sum is σ = 1071002898. Its totient is φ = 306000824.

The previous prime is 612001639. The next prime is 612001657. The reversal of 612001652 is 256100216.

It can be written as a sum of positive squares in only one way, i.e., 484176016 + 127825636 = 22004^2 + 11306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612001657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76500203 + ... + 76500210.

It is an arithmetic number, because the mean of its divisors is an integer number (178500483).

Almost surely, 2^612001652 is an apocalyptic number.

It is an amenable number.

612001652 is a deficient number, since it is larger than the sum of its proper divisors (459001246).

612001652 is a wasteful number, since it uses less digits than its factorization.

612001652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153000417 (or 153000415 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 612001652 is about 24738.6671427545. The cubic root of 612001652 is about 849.0192388085.

Adding to 612001652 its reverse (256100216), we get a palindrome (868101868).

The spelling of 612001652 in words is "six hundred twelve million, one thousand, six hundred fifty-two".