70329491 has 4 divisors (see below), whose sum is σ = 71119800. Its totient is φ = 69539184.

The previous prime is 70329487. The next prime is 70329557. The reversal of 70329491 is 19492307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19492307 = 353 ⋅55219.

It is a cyclic number.

It is not a de Polignac number, because 70329491 - 2² = 70329487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70329451) 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, 395021 + ... + 395198.

It is an arithmetic number, because the mean of its divisors is an integer number (17779950).

Almost surely, 2^70329491 is an apocalyptic number.

70329491 is a deficient number, since it is larger than the sum of its proper divisors (790309).

70329491 is an equidigital number, since it uses as much as digits as its factorization.

70329491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790308.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 70329491 is about 8386.2680019184. The cubic root of 70329491 is about 412.7741496836.

The spelling of 70329491 in words is "seventy million, three hundred twenty-nine thousand, four hundred ninety-one".