70406351 has 4 divisors (see below), whose sum is σ = 72043752. Its totient is φ = 68768952.

The previous prime is 70406341. The next prime is 70406359. The reversal of 70406351 is 15360407.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70406351 - 2¹⁴ = 70389967 is a prime.

It is a super-2 number, since 2×70406351² = 9914108522270402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70406351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70406359) 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, 818636 + ... + 818721.

It is an arithmetic number, because the mean of its divisors is an integer number (18010938).

Almost surely, 2^70406351 is an apocalyptic number.

70406351 is a deficient number, since it is larger than the sum of its proper divisors (1637401).

70406351 is a wasteful number, since it uses less digits than its factorization.

70406351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637400.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 70406351 is about 8390.8492418825. The cubic root of 70406351 is about 412.9244624967.

Adding to 70406351 its reverse (15360407), we get a palindrome (85766758).

The spelling of 70406351 in words is "seventy million, four hundred six thousand, three hundred fifty-one".