725977 has 8 divisors (see below), whose sum is σ = 852416. Its totient is φ = 605232.

The previous prime is 725953. The next prime is 725981. The reversal of 725977 is 779527.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-725977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (725077) 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, 1143 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (106552).

2⁷²⁵⁹⁷⁷ is an apocalyptic number.

It is an amenable number.

725977 is a deficient number, since it is larger than the sum of its proper divisors (126439).

725977 is a wasteful number, since it uses less digits than its factorization.

725977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2847.

The product of its digits is 30870, while the sum is 37.

The square root of 725977 is about 852.0428392986. The cubic root of 725977 is about 89.8754243530.

The spelling of 725977 in words is "seven hundred twenty-five thousand, nine hundred seventy-seven".