70621623 has 6 divisors (see below), whose sum is σ = 102009024. Its totient is φ = 47081076.

The previous prime is 70621619. The next prime is 70621657. The reversal of 70621623 is 32612607.

It is a happy number.

It is not a de Polignac number, because 70621623 - 2² = 70621619 is a prime.

It is a super-3 number, since 3×70621623³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70621673) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3923415 + ... + 3923432.

It is an arithmetic number, because the mean of its divisors is an integer number (17001504).

Almost surely, 2^70621623 is an apocalyptic number.

70621623 is a deficient number, since it is larger than the sum of its proper divisors (31387401).

70621623 is a wasteful number, since it uses less digits than its factorization.

70621623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7846853 (or 7846850 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 70621623 is about 8403.6672352015. The cubic root of 70621623 is about 413.3448821059.

The spelling of 70621623 in words is "seventy million, six hundred twenty-one thousand, six hundred twenty-three".