748491 has 4 divisors (see below), whose sum is σ = 997992. Its totient is φ = 498992.

The previous prime is 748487. The next prime is 748499. The reversal of 748491 is 194847.

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

It is a cyclic number.

It is not a de Polignac number, because 748491 - 2² = 748487 is a prime.

It is an Ulam number.

It is a D-number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (748499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124746 + ... + 124751.

It is an arithmetic number, because the mean of its divisors is an integer number (249498).

2⁷⁴⁸⁴⁹¹ is an apocalyptic number.

748491 is a deficient number, since it is larger than the sum of its proper divisors (249501).

748491 is a wasteful number, since it uses less digits than its factorization.

748491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249500.

The product of its digits is 8064, while the sum is 33.

The square root of 748491 is about 865.1537435624. The cubic root of 748491 is about 90.7950546188.

The spelling of 748491 in words is "seven hundred forty-eight thousand, four hundred ninety-one".