70491619 has 8 divisors (see below), whose sum is σ = 80243712. Its totient is φ = 61296840.

The previous prime is 70491611. The next prime is 70491671. The reversal of 70491619 is 91619407.

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

It is not a de Polignac number, because 70491619 - 2³ = 70491611 is a prime.

It is a super-2 number, since 2×70491619² = 9938136698482322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70491611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139059 + ... + 139564.

It is an arithmetic number, because the mean of its divisors is an integer number (10030464).

Almost surely, 2^70491619 is an apocalyptic number.

70491619 is a deficient number, since it is larger than the sum of its proper divisors (9752093).

70491619 is a wasteful number, since it uses less digits than its factorization.

70491619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278657.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 70491619 is about 8395.9287157527. The cubic root of 70491619 is about 413.0910906410.

It can be divided in two parts, 7049 and 1619, that added together give a palindrome (8668).

The spelling of 70491619 in words is "seventy million, four hundred ninety-one thousand, six hundred nineteen".