70720503 has 16 divisors (see below), whose sum is σ = 108834816. Its totient is φ = 40010400.

The previous prime is 70720499. The next prime is 70720511. The reversal of 70720503 is 30502707.

It is not a de Polignac number, because 70720503 - 2² = 70720499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70720543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14551 + ... + 18792.

It is an arithmetic number, because the mean of its divisors is an integer number (6802176).

Almost surely, 2^70720503 is an apocalyptic number.

70720503 is a deficient number, since it is larger than the sum of its proper divisors (38114313).

70720503 is a wasteful number, since it uses less digits than its factorization.

70720503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33454.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 70720503 is about 8409.5483231860. The cubic root of 70720503 is about 413.5377053979.

The spelling of 70720503 in words is "seventy million, seven hundred twenty thousand, five hundred three".