772478634 has 8 divisors (see below), whose sum is σ = 1544957280. Its totient is φ = 257492876.

The previous prime is 772478569. The next prime is 772478639. The reversal of 772478634 is 436874277.

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

772478634 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (772478639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64373214 + ... + 64373225.

It is an arithmetic number, because the mean of its divisors is an integer number (193119660).

Almost surely, 2^772478634 is an apocalyptic number.

772478634 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

772478634 is a wasteful number, since it uses less digits than its factorization.

772478634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128746444.

The product of its digits is 1580544, while the sum is 48.

The square root of 772478634 is about 27793.4998515840. The cubic root of 772478634 is about 917.5480685688.

The spelling of 772478634 in words is "seven hundred seventy-two million, four hundred seventy-eight thousand, six hundred thirty-four".