245677 has 4 divisors (see below), whose sum is σ = 247456. Its totient is φ = 243900.

The previous prime is 245671. The next prime is 245681. The reversal of 245677 is 776542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 245677 - 2¹⁵ = 212909 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹⁷ + 4⁸ + 6⁶ + 5 + 7 + 7⁴ .

It is a Duffinian number.

It is a plaindrome in base 10.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245671) 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, 663 + ... + 964.

It is an arithmetic number, because the mean of its divisors is an integer number (61864).

2²⁴⁵⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

245677 is a deficient number, since it is larger than the sum of its proper divisors (1779).

245677 is a wasteful number, since it uses less digits than its factorization.

245677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778.

The product of its digits is 11760, while the sum is 31.

The square root of 245677 is about 495.6581483240. The cubic root of 245677 is about 62.6308299453.

The spelling of 245677 in words is "two hundred forty-five thousand, six hundred seventy-seven".