70747851 has 4 divisors (see below), whose sum is σ = 94330472. Its totient is φ = 47165232.

The previous prime is 70747847. The next prime is 70747871. The reversal of 70747851 is 15874707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15874707 = 3 ⋅5291569.

It is not a de Polignac number, because 70747851 - 2² = 70747847 is a prime.

It is a super-3 number, since 3×70747851³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70747801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11791306 + ... + 11791311.

It is an arithmetic number, because the mean of its divisors is an integer number (23582618).

Almost surely, 2^70747851 is an apocalyptic number.

70747851 is a deficient number, since it is larger than the sum of its proper divisors (23582621).

70747851 is a wasteful number, since it uses less digits than its factorization.

70747851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23582620.

The product of its (nonzero) digits is 54880, while the sum is 39.

The square root of 70747851 is about 8411.1741748700. The cubic root of 70747851 is about 413.5910042820.

The spelling of 70747851 in words is "seventy million, seven hundred forty-seven thousand, eight hundred fifty-one".