70146681 has 8 divisors (see below), whose sum is σ = 102031584. Its totient is φ = 42513120.

The previous prime is 70146653. The next prime is 70146683. The reversal of 70146681 is 18664107.

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 70146681 - 2¹³ = 70138489 is a prime.

It is a super-2 number, since 2×70146681² = 9841113710631522, 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 a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2125657 = 70146681 / (7 + 0 + 1 + 4 + 6 + 6 + 8 + 1).

It is not an unprimeable number, because it can be changed into a prime (70146683) 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, 1062796 + ... + 1062861.

It is an arithmetic number, because the mean of its divisors is an integer number (12753948).

Almost surely, 2^70146681 is an apocalyptic number.

It is an amenable number.

70146681 is a deficient number, since it is larger than the sum of its proper divisors (31884903).

70146681 is a wasteful number, since it uses less digits than its factorization.

70146681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125671.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 70146681 is about 8375.3615444350. The cubic root of 70146681 is about 412.4161930753.

It can be divided in two parts, 7014 and 6681, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 70146681 in words is "seventy million, one hundred forty-six thousand, six hundred eighty-one".