537017661 has 8 divisors (see below), whose sum is σ = 795581760. Its totient is φ = 358011756.

The previous prime is 537017651. The next prime is 537017671. The reversal of 537017661 is 166710735.

It is an interprime number because it is at equal distance from previous prime (537017651) and next prime (537017671).

It is not a de Polignac number, because 537017661 - 2⁶ = 537017597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (537017651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9944745 + ... + 9944798.

It is an arithmetic number, because the mean of its divisors is an integer number (99447720).

Almost surely, 2^537017661 is an apocalyptic number.

It is an amenable number.

537017661 is a deficient number, since it is larger than the sum of its proper divisors (258564099).

537017661 is a wasteful number, since it uses less digits than its factorization.

537017661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19889552 (or 19889546 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 537017661 is about 23173.6415135818. The cubic root of 537017661 is about 812.8233845186.

The spelling of 537017661 in words is "five hundred thirty-seven million, seventeen thousand, six hundred sixty-one".