771972085 has 8 divisors (see below), whose sum is σ = 926678016. Its totient is φ = 617370000.

The previous prime is 771972041. The next prime is 771972101. The reversal of 771972085 is 580279177.

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

It is a de Polignac number, because none of the positive numbers 2^k-771972085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8541 + ... + 40210.

It is an arithmetic number, because the mean of its divisors is an integer number (115834752).

Almost surely, 2^771972085 is an apocalyptic number.

It is an amenable number.

771972085 is a deficient number, since it is larger than the sum of its proper divisors (154705931).

771972085 is a wasteful number, since it uses less digits than its factorization.

771972085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51923.

The product of its (nonzero) digits is 246960, while the sum is 46.

The square root of 771972085 is about 27784.3856329414. The cubic root of 771972085 is about 917.3474655289.

The spelling of 771972085 in words is "seven hundred seventy-one million, nine hundred seventy-two thousand, eighty-five".