667801461 has 8 divisors (see below), whose sum is σ = 896378400. Its totient is φ = 442212752.

The previous prime is 667801439. The next prime is 667801469. The reversal of 667801461 is 164108766.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 667801461 - 2⁶ = 667801397 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 (667801469) 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, 746535 + ... + 747428.

It is an arithmetic number, because the mean of its divisors is an integer number (112047300).

Almost surely, 2^667801461 is an apocalyptic number.

It is an amenable number.

667801461 is a deficient number, since it is larger than the sum of its proper divisors (228576939).

667801461 is a wasteful number, since it uses less digits than its factorization.

667801461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494115.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 667801461 is about 25841.8548289398. The cubic root of 667801461 is about 874.0758508424.

The spelling of 667801461 in words is "six hundred sixty-seven million, eight hundred one thousand, four hundred sixty-one".