661930467 has 16 divisors (see below), whose sum is σ = 972345600. Its totient is φ = 397196000.

The previous prime is 661930463. The next prime is 661930471. The reversal of 661930467 is 764039166.

661930467 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 (661930463) and next prime (661930471).

It is a cyclic number.

It is not a de Polignac number, because 661930467 - 2² = 661930463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (661930463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95967 + ... + 102632.

It is an arithmetic number, because the mean of its divisors is an integer number (60771600).

Almost surely, 2^661930467 is an apocalyptic number.

661930467 is a deficient number, since it is larger than the sum of its proper divisors (310415133).

661930467 is a wasteful number, since it uses less digits than its factorization.

661930467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198714.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 661930467 is about 25728.0093866587. The cubic root of 661930467 is about 871.5068206069.

The spelling of 661930467 in words is "six hundred sixty-one million, nine hundred thirty thousand, four hundred sixty-seven".