70621953 has 16 divisors (see below), whose sum is σ = 97802496. Its totient is φ = 45294480.

The previous prime is 70621951. The next prime is 70621963. The reversal of 70621953 is 35912607.

It is not a de Polignac number, because 70621953 - 2¹ = 70621951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70621951) 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 15 ways as a sum of consecutive naturals, for example, 4558 + ... + 12728.

It is an arithmetic number, because the mean of its divisors is an integer number (6112656).

Almost surely, 2^70621953 is an apocalyptic number.

It is an amenable number.

70621953 is a deficient number, since it is larger than the sum of its proper divisors (27180543).

70621953 is a wasteful number, since it uses less digits than its factorization.

70621953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8284.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 70621953 is about 8403.6868694639. The cubic root of 70621953 is about 413.3455259295.

The spelling of 70621953 in words is "seventy million, six hundred twenty-one thousand, nine hundred fifty-three".