70913545 has 8 divisors (see below), whose sum is σ = 90102024. Its totient is φ = 53393664.

The previous prime is 70913539. The next prime is 70913551. The reversal of 70913545 is 54531907.

It is an interprime number because it is at equal distance from previous prime (70913539) and next prime (70913551).

It can be written as a sum of positive squares in 4 ways, for example, as 35772361 + 35141184 = 5981^2 + 5928^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70913545 - 2¹¹ = 70911497 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 70913545.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417054 + ... + 417223.

It is an arithmetic number, because the mean of its divisors is an integer number (11262753).

Almost surely, 2^70913545 is an apocalyptic number.

It is an amenable number.

70913545 is a deficient number, since it is larger than the sum of its proper divisors (19188479).

70913545 is a wasteful number, since it uses less digits than its factorization.

70913545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834299.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 70913545 is about 8421.0180500935. The cubic root of 70913545 is about 413.9136341892.

It can be divided in two parts, 7091 and 3545, that multiplied together give a triangular number (25137595 = T₇₀₉₀).

The spelling of 70913545 in words is "seventy million, nine hundred thirteen thousand, five hundred forty-five".