70945651 has 4 divisors (see below), whose sum is σ = 81080752. Its totient is φ = 60810552.

The previous prime is 70945649. The next prime is 70945681. The reversal of 70945651 is 15654907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70945651 - 2¹ = 70945649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70945651.

It is not an unprimeable number, because it can be changed into a prime (70945681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5067540 + ... + 5067553.

It is an arithmetic number, because the mean of its divisors is an integer number (20270188).

Almost surely, 2^70945651 is an apocalyptic number.

70945651 is a deficient number, since it is larger than the sum of its proper divisors (10135101).

70945651 is a wasteful number, since it uses less digits than its factorization.

70945651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135100.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 70945651 is about 8422.9241359518. The cubic root of 70945651 is about 413.9760910213.

It can be divided in two parts, 709 and 45651, that added together give a triangular number (46360 = T₃₀₄).

The spelling of 70945651 in words is "seventy million, nine hundred forty-five thousand, six hundred fifty-one".