70406397 has 6 divisors (see below), whose sum is σ = 101698142. Its totient is φ = 46937592.

The previous prime is 70406359. The next prime is 70406417. The reversal of 70406397 is 79360407.

It can be written as a sum of positive squares in only one way, i.e., 64545156 + 5861241 = 8034^2 + 2421^2 .

It is not a de Polignac number, because 70406397 - 2¹⁰ = 70405373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70476397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3911458 + ... + 3911475.

Almost surely, 2^70406397 is an apocalyptic number.

It is an amenable number.

70406397 is a deficient number, since it is larger than the sum of its proper divisors (31291745).

70406397 is a wasteful number, since it uses less digits than its factorization.

70406397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822939 (or 7822936 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 70406397 is about 8390.8519829634. The cubic root of 70406397 is about 412.9245524248.

The spelling of 70406397 in words is "seventy million, four hundred six thousand, three hundred ninety-seven".