770421 has 8 divisors (see below), whose sum is σ = 1041984. Its totient is φ = 506240.

The previous prime is 770417. The next prime is 770437. The reversal of 770421 is 124077.

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 770421 - 2² = 770417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (770401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1596 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (130248).

2⁷⁷⁰⁴²¹ is an apocalyptic number.

770421 is a gapful number since it is divisible by the number (71) formed by its first and last digit.

It is an amenable number.

770421 is a deficient number, since it is larger than the sum of its proper divisors (271563).

770421 is a wasteful number, since it uses less digits than its factorization.

770421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 770421 is about 877.7362929719. The cubic root of 770421 is about 91.6732660079.

Adding to 770421 its reverse (124077), we get a palindrome (894498).

The spelling of 770421 in words is "seven hundred seventy thousand, four hundred twenty-one", and thus it is an iban number.