70331247 has 48 divisors (see below), whose sum is σ = 121605120. Its totient is φ = 39789792.

The previous prime is 70331237. The next prime is 70331257. The reversal of 70331247 is 74213307.

It is an interprime number because it is at equal distance from previous prime (70331237) and next prime (70331257).

It is not a de Polignac number, because 70331247 - 2⁸ = 70330991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 70331247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70331237) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 294154 + ... + 294392.

It is an arithmetic number, because the mean of its divisors is an integer number (2533440).

Almost surely, 2^70331247 is an apocalyptic number.

70331247 is a deficient number, since it is larger than the sum of its proper divisors (51273873).

70331247 is a wasteful number, since it uses less digits than its factorization.

70331247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 70331247 is about 8386.3726962257. The cubic root of 70331247 is about 412.7775850626. Note that the first 3 decimals are identical.

The spelling of 70331247 in words is "seventy million, three hundred thirty-one thousand, two hundred forty-seven".