70720053 has 4 divisors (see below), whose sum is σ = 94293408. Its totient is φ = 47146700.

The previous prime is 70720049. The next prime is 70720057. The reversal of 70720053 is 35002707.

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 an interprime number because it is at equal distance from previous prime (70720049) and next prime (70720057).

It is a cyclic number.

It is not a de Polignac number, because 70720053 - 2² = 70720049 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70720057) 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, 11786673 + ... + 11786678.

It is an arithmetic number, because the mean of its divisors is an integer number (23573352).

Almost surely, 2^70720053 is an apocalyptic number.

It is an amenable number.

70720053 is a deficient number, since it is larger than the sum of its proper divisors (23573355).

70720053 is a wasteful number, since it uses less digits than its factorization.

70720053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23573354.

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

The square root of 70720053 is about 8409.5215678420. The cubic root of 70720053 is about 413.5368282720.

The spelling of 70720053 in words is "seventy million, seven hundred twenty thousand, fifty-three".