70637345 has 8 divisors (see below), whose sum is σ = 89226240. Its totient is φ = 53535600.

The previous prime is 70637321. The next prime is 70637387. The reversal of 70637345 is 54373607.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70637345 - 2¹⁴ = 70620961 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 371681 + ... + 371870.

It is an arithmetic number, because the mean of its divisors is an integer number (11153280).

Almost surely, 2^70637345 is an apocalyptic number.

It is an amenable number.

70637345 is a deficient number, since it is larger than the sum of its proper divisors (18588895).

70637345 is a wasteful number, since it uses less digits than its factorization.

70637345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743575.

The product of its (nonzero) digits is 52920, while the sum is 35.

The square root of 70637345 is about 8404.6026080952. The cubic root of 70637345 is about 413.3755531940.

The spelling of 70637345 in words is "seventy million, six hundred thirty-seven thousand, three hundred forty-five".