772269987 has 4 divisors (see below), whose sum is σ = 1029693320. Its totient is φ = 514846656.

The previous prime is 772269983. The next prime is 772269989. The reversal of 772269987 is 789962277.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 772269987 - 2² = 772269983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (772269983) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 128711662 + ... + 128711667.

It is an arithmetic number, because the mean of its divisors is an integer number (257423330).

Almost surely, 2^772269987 is an apocalyptic number.

772269987 is a deficient number, since it is larger than the sum of its proper divisors (257423333).

772269987 is a wasteful number, since it uses less digits than its factorization.

772269987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257423332.

The product of its digits is 5334336, while the sum is 57.

The square root of 772269987 is about 27789.7460765657. The cubic root of 772269987 is about 917.4654510127.

The spelling of 772269987 in words is "seven hundred seventy-two million, two hundred sixty-nine thousand, nine hundred eighty-seven".