773408997 has 12 divisors (see below), whose sum is σ = 1117407564. Its totient is φ = 515485440.

The previous prime is 773408969. The next prime is 773409001. The reversal of 773408997 is 799804377.

It can be written as a sum of positive squares in 2 ways, for example, as 167806116 + 605602881 = 12954^2 + 24609^2 .

It is not a de Polignac number, because 773408997 - 2⁷ = 773408869 is a prime.

It is a super-2 number, since 2×773408997² = 1196322953281092018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (773408197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48597 + ... + 62517.

It is an arithmetic number, because the mean of its divisors is an integer number (93117297).

Almost surely, 2^773408997 is an apocalyptic number.

It is an amenable number.

773408997 is a deficient number, since it is larger than the sum of its proper divisors (343998567).

773408997 is a wasteful number, since it uses less digits than its factorization.

773408997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100 (or 20097 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 54.

The square root of 773408997 is about 27810.2318760560. The cubic root of 773408997 is about 917.9162816843.

The spelling of 773408997 in words is "seven hundred seventy-three million, four hundred eight thousand, nine hundred ninety-seven".