720946469 has 4 divisors (see below), whose sum is σ = 758891040. Its totient is φ = 683001900.

The previous prime is 720946463. The next prime is 720946481. The reversal of 720946469 is 964649027.

It is a happy number.

720946469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 720946469 - 2²⁴ = 704169253 is a prime.

It is a super-2 number, since 2×720946469² = 1039527622327135922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720946463) 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, 18972257 + ... + 18972294.

It is an arithmetic number, because the mean of its divisors is an integer number (189722760).

Almost surely, 2^720946469 is an apocalyptic number.

It is an amenable number.

720946469 is a deficient number, since it is larger than the sum of its proper divisors (37944571).

720946469 is a wasteful number, since it uses less digits than its factorization.

720946469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37944570.

The product of its (nonzero) digits is 653184, while the sum is 47.

The square root of 720946469 is about 26850.4463463831. The cubic root of 720946469 is about 896.6735098188.

The spelling of 720946469 in words is "seven hundred twenty million, nine hundred forty-six thousand, four hundred sixty-nine".