70741509 has 4 divisors (see below), whose sum is σ = 94322016. Its totient is φ = 47161004.

The previous prime is 70741507. The next prime is 70741519. The reversal of 70741509 is 90514707.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90514707 = 3 ⋅30171569.

It is a cyclic number.

It is not a de Polignac number, because 70741509 - 2¹ = 70741507 is a prime.

It is a super-2 number, since 2×70741509² = 10008722191194162, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70741509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70741501) 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, 11790249 + ... + 11790254.

It is an arithmetic number, because the mean of its divisors is an integer number (23580504).

Almost surely, 2^70741509 is an apocalyptic number.

It is an amenable number.

70741509 is a deficient number, since it is larger than the sum of its proper divisors (23580507).

70741509 is a wasteful number, since it uses less digits than its factorization.

70741509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23580506.

The product of its (nonzero) digits is 8820, while the sum is 33.

The square root of 70741509 is about 8410.7971679265. The cubic root of 70741509 is about 413.5786454966.

The spelling of 70741509 in words is "seventy million, seven hundred forty-one thousand, five hundred nine".