261000652 has 12 divisors (see below), whose sum is σ = 498274056. Its totient is φ = 118636640.

The previous prime is 261000647. The next prime is 261000659. The reversal of 261000652 is 256000162.

It is a super-3 number, since 3×261000652³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (261000659) 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, 2965873 + ... + 2965960.

It is an arithmetic number, because the mean of its divisors is an integer number (41522838).

Almost surely, 2^261000652 is an apocalyptic number.

261000652 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261000652 is a deficient number, since it is larger than the sum of its proper divisors (237273404).

261000652 is a wasteful number, since it uses less digits than its factorization.

261000652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5931848 (or 5931846 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 261000652 is about 16155.5146002843. The cubic root of 261000652 is about 639.0681849878.

The spelling of 261000652 in words is "two hundred sixty-one million, six hundred fifty-two", and thus it is an aban number.