70681653 has 52 divisors (see below), whose sum is σ = 127545760. Its totient is φ = 38263752.

The previous prime is 70681649. The next prime is 70681657. The reversal of 70681653 is 35618607.

It is an interprime number because it is at equal distance from previous prime (70681649) and next prime (70681657).

It is not a de Polignac number, because 70681653 - 2² = 70681649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70681657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 51 ways as a sum of consecutive naturals, for example, 3720078 + ... + 3720096.

Almost surely, 2^70681653 is an apocalyptic number.

It is an amenable number.

70681653 is a deficient number, since it is larger than the sum of its proper divisors (56864107).

70681653 is an frugal number, since it uses more digits than its factorization.

70681653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 70681653 is about 8407.2381315150. The cubic root of 70681653 is about 413.4619664821.

The spelling of 70681653 in words is "seventy million, six hundred eighty-one thousand, six hundred fifty-three".