70350091 has 4 divisors (see below), whose sum is σ = 80400112. Its totient is φ = 60300072.

The previous prime is 70350073. The next prime is 70350113. The reversal of 70350091 is 19005307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19005307 = 97 ⋅195931.

It is not a de Polignac number, because 70350091 - 2¹⁹ = 69825803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70350001) 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, 5025000 + ... + 5025013.

It is an arithmetic number, because the mean of its divisors is an integer number (20100028).

Almost surely, 2^70350091 is an apocalyptic number.

70350091 is a deficient number, since it is larger than the sum of its proper divisors (10050021).

70350091 is a wasteful number, since it uses less digits than its factorization.

70350091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050020.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 70350091 is about 8387.4961102823. The cubic root of 70350091 is about 412.8144472283.

Adding to 70350091 its reverse (19005307), we get a palindrome (89355398).

The spelling of 70350091 in words is "seventy million, three hundred fifty thousand, ninety-one".