661151014 has 16 divisors (see below), whose sum is σ = 998092368. Its totient is φ = 328460032.

The previous prime is 661151011. The next prime is 661151017. The reversal of 661151014 is 410151166.

661151014 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (661151011) and next prime (661151017).

It is a self number, because there is not a number n which added to its sum of digits gives 661151014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (661151011) 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, 272334 + ... + 274750.

It is an arithmetic number, because the mean of its divisors is an integer number (62380773).

Almost surely, 2^661151014 is an apocalyptic number.

661151014 is a deficient number, since it is larger than the sum of its proper divisors (336941354).

661151014 is a wasteful number, since it uses less digits than its factorization.

661151014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 661151014 is about 25712.8569785623. The cubic root of 661151014 is about 871.1646067092.

The spelling of 661151014 in words is "six hundred sixty-one million, one hundred fifty-one thousand, fourteen".