70418491 has 24 divisors (see below), whose sum is σ = 84460320. Its totient is φ = 58312320.

The previous prime is 70418489. The next prime is 70418521. The reversal of 70418491 is 19481407.

It is not a de Polignac number, because 70418491 - 2¹ = 70418489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70418401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 139746 + ... + 140248.

It is an arithmetic number, because the mean of its divisors is an integer number (3519180).

Almost surely, 2^70418491 is an apocalyptic number.

70418491 is a deficient number, since it is larger than the sum of its proper divisors (14041829).

70418491 is a wasteful number, since it uses less digits than its factorization.

70418491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 70418491 is about 8391.5726178113. The cubic root of 70418491 is about 412.9481943278.

Adding to 70418491 its reverse (19481407), we get a palindrome (89899898).

It can be divided in two parts, 704 and 18491, that multiplied together give a square (13017664 = 3608²).

The spelling of 70418491 in words is "seventy million, four hundred eighteen thousand, four hundred ninety-one".