770645730 has 32 divisors (see below), whose sum is σ = 1853123904. Its totient is φ = 205108416.

The previous prime is 770645723. The next prime is 770645737. The reversal of 770645730 is 37546077.

It is an interprime number because it is at equal distance from previous prime (770645723) and next prime (770645737).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (770645737) 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 15 ways as a sum of consecutive naturals, for example, 8869 + ... + 40248.

It is an arithmetic number, because the mean of its divisors is an integer number (57910122).

Almost surely, 2^770645730 is an apocalyptic number.

770645730 is an abundant number, since it is smaller than the sum of its proper divisors (1082478174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

770645730 is a wasteful number, since it uses less digits than its factorization.

770645730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49650.

The product of its (nonzero) digits is 123480, while the sum is 39.

The square root of 770645730 is about 27760.5066596415. The cubic root of 770645730 is about 916.8217876695.

The spelling of 770645730 in words is "seven hundred seventy million, six hundred forty-five thousand, seven hundred thirty".