70742571 has 8 divisors (see below), whose sum is σ = 97576080. Its totient is φ = 45535392.

The previous prime is 70742569. The next prime is 70742587. The reversal of 70742571 is 17524707.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70742571 - 2¹ = 70742569 is a prime.

It is a super-2 number, since 2×70742571² = 10009022703380082, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (70742501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406480 + ... + 406653.

It is an arithmetic number, because the mean of its divisors is an integer number (12197010).

Almost surely, 2^70742571 is an apocalyptic number.

70742571 is a deficient number, since it is larger than the sum of its proper divisors (26833509).

70742571 is a wasteful number, since it uses less digits than its factorization.

70742571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813165.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 70742571 is about 8410.8603008254. The cubic root of 70742571 is about 413.5807150893.

The spelling of 70742571 in words is "seventy million, seven hundred forty-two thousand, five hundred seventy-one".