772819397 has 8 divisors (see below), whose sum is σ = 883680000. Its totient is φ = 662073264.

The previous prime is 772819381. The next prime is 772819409. The reversal of 772819397 is 793918277.

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 772819397 - 2⁴ = 772819381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (772819897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13622 + ... + 41607.

It is an arithmetic number, because the mean of its divisors is an integer number (110460000).

Almost surely, 2^772819397 is an apocalyptic number.

It is an amenable number.

772819397 is a deficient number, since it is larger than the sum of its proper divisors (110860603).

772819397 is a wasteful number, since it uses less digits than its factorization.

772819397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57235.

The product of its digits is 1333584, while the sum is 53.

The square root of 772819397 is about 27799.6294399764. The cubic root of 772819397 is about 917.6829678634.

The spelling of 772819397 in words is "seven hundred seventy-two million, eight hundred nineteen thousand, three hundred ninety-seven".