70724153 has 4 divisors (see below), whose sum is σ = 71119440. Its totient is φ = 70328868.

The previous prime is 70724123. The next prime is 70724179. The reversal of 70724153 is 35142707.

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 70724153 - 2¹² = 70720057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70724123) 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, 197375 + ... + 197732.

It is an arithmetic number, because the mean of its divisors is an integer number (17779860).

Almost surely, 2^70724153 is an apocalyptic number.

It is an amenable number.

70724153 is a deficient number, since it is larger than the sum of its proper divisors (395287).

70724153 is a wasteful number, since it uses less digits than its factorization.

70724153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395286.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 70724153 is about 8409.7653356084. The cubic root of 70724153 is about 413.5448197264.

The spelling of 70724153 in words is "seventy million, seven hundred twenty-four thousand, one hundred fifty-three".