699977 has 4 divisors (see below), whose sum is σ = 702660. Its totient is φ = 697296.

The previous prime is 699967. The next prime is 700001. The reversal of 699977 is 779996.

699977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 440896 + 259081 = 664^2 + 509^2 .

It is a cyclic number.

It is not a de Polignac number, because 699977 - 2⁴ = 699961 is a prime.

It is a super-3 number, since 3×699977³ = 1028898573332663499, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (699947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902 + ... + 1487.

It is an arithmetic number, because the mean of its divisors is an integer number (175665).

2⁶⁹⁹⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

699977 is a deficient number, since it is larger than the sum of its proper divisors (2683).

699977 is a wasteful number, since it uses less digits than its factorization.

699977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682.

The product of its digits is 214326, while the sum is 47.

The square root of 699977 is about 836.6462812922. The cubic root of 699977 is about 88.7894276973.

The spelling of 699977 in words is "six hundred ninety-nine thousand, nine hundred seventy-seven".