746921 has 4 divisors (see below), whose sum is σ = 853632. Its totient is φ = 640212.

The previous prime is 746903. The next prime is 746939. The reversal of 746921 is 129647.

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, and also an emirpimes, since its reverse is a distinct semiprime: 129647 = 7 ⋅18521.

It is an interprime number because it is at equal distance from previous prime (746903) and next prime (746939).

It is a cyclic number.

It is not a de Polignac number, because 746921 - 2¹⁴ = 730537 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 746921.

It is not an unprimeable number, because it can be changed into a prime (746951) 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 3 ways as a sum of consecutive naturals, for example, 53345 + ... + 53358.

It is an arithmetic number, because the mean of its divisors is an integer number (213408).

2⁷⁴⁶⁹²¹ is an apocalyptic number.

It is an amenable number.

746921 is a deficient number, since it is larger than the sum of its proper divisors (106711).

746921 is a wasteful number, since it uses less digits than its factorization.

746921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106710.

The product of its digits is 3024, while the sum is 29.

The square root of 746921 is about 864.2459140777. The cubic root of 746921 is about 90.7315276828.

The spelling of 746921 in words is "seven hundred forty-six thousand, nine hundred twenty-one".