697509377 has 8 divisors (see below), whose sum is σ = 700569000. Its totient is φ = 694457344.

The previous prime is 697509347. The next prime is 697509389. The reversal of 697509377 is 773905796.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 50112241 + 647397136 = 7079^2 + 25444^2 .

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 697509377 - 2⁶ = 697509313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697509347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248699 + ... + 251487.

It is an arithmetic number, because the mean of its divisors is an integer number (87571125).

Almost surely, 2^697509377 is an apocalyptic number.

It is an amenable number.

697509377 is a deficient number, since it is larger than the sum of its proper divisors (3059623).

697509377 is a wasteful number, since it uses less digits than its factorization.

697509377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3795.

The product of its (nonzero) digits is 2500470, while the sum is 53.

The square root of 697509377 is about 26410.4028178292. The cubic root of 697509377 is about 886.8496864519.

The spelling of 697509377 in words is "six hundred ninety-seven million, five hundred nine thousand, three hundred seventy-seven".