720834537 has 16 divisors (see below), whose sum is σ = 993000960. Its totient is φ = 464640000.

The previous prime is 720834523. The next prime is 720834547. The reversal of 720834537 is 735438027.

It is not a de Polignac number, because 720834537 - 2⁷ = 720834409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 720834495 and 720834504.

It is not an unprimeable number, because it can be changed into a prime (720834547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128287 + ... + 133787.

It is an arithmetic number, because the mean of its divisors is an integer number (62062560).

Almost surely, 2^720834537 is an apocalyptic number.

It is an amenable number.

720834537 is a deficient number, since it is larger than the sum of its proper divisors (272166423).

720834537 is a wasteful number, since it uses less digits than its factorization.

720834537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944.

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 720834537 is about 26848.3619053379. The cubic root of 720834537 is about 896.6271024648.

The spelling of 720834537 in words is "seven hundred twenty million, eight hundred thirty-four thousand, five hundred thirty-seven".