70287397 has 4 divisors (see below), whose sum is σ = 70640800. Its totient is φ = 69933996.

The previous prime is 70287377. The next prime is 70287421. The reversal of 70287397 is 79378207.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70287397 - 2¹⁵ = 70254629 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 (70287307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176403 + ... + 176800.

It is an arithmetic number, because the mean of its divisors is an integer number (17660200).

Almost surely, 2^70287397 is an apocalyptic number.

It is an amenable number.

70287397 is a deficient number, since it is larger than the sum of its proper divisors (353403).

70287397 is a wasteful number, since it uses less digits than its factorization.

70287397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353402.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 70287397 is about 8383.7579282801. The cubic root of 70287397 is about 412.6917812846.

The spelling of 70287397 in words is "seventy million, two hundred eighty-seven thousand, three hundred ninety-seven".