70909965 has 32 divisors (see below), whose sum is σ = 144072960. Its totient is φ = 32415552.

The previous prime is 70909963. The next prime is 70909973. The reversal of 70909965 is 56990907.

It is not a de Polignac number, because 70909965 - 2¹ = 70909963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 70909965.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70909961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36574 + ... + 38463.

It is an arithmetic number, because the mean of its divisors is an integer number (4502280).

Almost surely, 2^70909965 is an apocalyptic number.

It is an amenable number.

70909965 is an abundant number, since it is smaller than the sum of its proper divisors (73162995).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70909965 is a wasteful number, since it uses less digits than its factorization.

70909965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75058 (or 75052 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 70909965 is about 8420.8054840377. The cubic root of 70909965 is about 413.9066687322.

The spelling of 70909965 in words is "seventy million, nine hundred nine thousand, nine hundred sixty-five".