754649 has 6 divisors (see below), whose sum is σ = 877914. Its totient is φ = 646800.

The previous prime is 754639. The next prime is 754651. The reversal of 754649 is 946457.

It can be written as a sum of positive squares in only one way, i.e., 753424 + 1225 = 868^2 + 35^2 .

It is not a de Polignac number, because 754649 - 2¹² = 750553 is a prime.

It is a super-2 number, since 2×754649² = 1138990226402, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (754639) 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 5 ways as a sum of consecutive naturals, for example, 7652 + ... + 7749.

It is an arithmetic number, because the mean of its divisors is an integer number (146319).

2⁷⁵⁴⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

754649 is a deficient number, since it is larger than the sum of its proper divisors (123265).

754649 is a wasteful number, since it uses less digits than its factorization.

754649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15415 (or 15408 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 754649 is about 868.7053585653. The cubic root of 754649 is about 91.0433718300.

The spelling of 754649 in words is "seven hundred fifty-four thousand, six hundred forty-nine".