661030153 has 8 divisors (see below), whose sum is σ = 762943680. Its totient is φ = 560986800.

The previous prime is 661030103. The next prime is 661030163. The reversal of 661030153 is 351030166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-661030153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (661030103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466783 + ... + 468196.

It is an arithmetic number, because the mean of its divisors is an integer number (95367960).

Almost surely, 2^661030153 is an apocalyptic number.

It is an amenable number.

661030153 is a deficient number, since it is larger than the sum of its proper divisors (101913527).

661030153 is a wasteful number, since it uses less digits than its factorization.

661030153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935087.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 661030153 is about 25710.5066655638. The cubic root of 661030153 is about 871.1115193712. Note that the first 3 decimals are identical.

It can be divided in two parts, 6610 and 30153, that added together give a palindrome (36763).

The spelling of 661030153 in words is "six hundred sixty-one million, thirty thousand, one hundred fifty-three".