661075035 has 16 divisors (see below), whose sum is σ = 1059886080. Its totient is φ = 351851360.

The previous prime is 661075013. The next prime is 661075049. The reversal of 661075035 is 530570166.

It is not a de Polignac number, because 661075035 - 2⁵ = 661075003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 661074987 and 661075005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37515 + ... + 52244.

It is an arithmetic number, because the mean of its divisors is an integer number (66242880).

Almost surely, 2^661075035 is an apocalyptic number.

661075035 is a deficient number, since it is larger than the sum of its proper divisors (398811045).

661075035 is a wasteful number, since it uses less digits than its factorization.

661075035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90258.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 661075035 is about 25711.3794845784. The cubic root of 661075035 is about 871.1312342270.

The spelling of 661075035 in words is "six hundred sixty-one million, seventy-five thousand, thirty-five".