766461421 has 8 divisors (see below), whose sum is σ = 856533888. Its totient is φ = 679788000.

The previous prime is 766461403. The next prime is 766461467. The reversal of 766461421 is 124164667.

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 766461421 - 2¹⁷ = 766330349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (766461491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 849285 + ... + 850186.

It is an arithmetic number, because the mean of its divisors is an integer number (107066736).

Almost surely, 2^766461421 is an apocalyptic number.

It is an amenable number.

766461421 is a deficient number, since it is larger than the sum of its proper divisors (90072467).

766461421 is a wasteful number, since it uses less digits than its factorization.

766461421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699523.

The product of its digits is 48384, while the sum is 37.

The square root of 766461421 is about 27685.0396604375. The cubic root of 766461421 is about 915.1594458717.

The spelling of 766461421 in words is "seven hundred sixty-six million, four hundred sixty-one thousand, four hundred twenty-one".