70498779 has 32 divisors (see below), whose sum is σ = 108247104. Its totient is φ = 40427520.

The previous prime is 70498777. The next prime is 70498781. The reversal of 70498779 is 97789407.

It is an interprime number because it is at equal distance from previous prime (70498777) and next prime (70498781).

It is not a de Polignac number, because 70498779 - 2¹ = 70498777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (70498777) 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, 74449 + ... + 75389.

It is an arithmetic number, because the mean of its divisors is an integer number (3382722).

Almost surely, 2^70498779 is an apocalyptic number.

70498779 is a deficient number, since it is larger than the sum of its proper divisors (37748325).

70498779 is a wasteful number, since it uses less digits than its factorization.

70498779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 70498779 is about 8396.3551020666. The cubic root of 70498779 is about 413.1050763796.

The spelling of 70498779 in words is "seventy million, four hundred ninety-eight thousand, seven hundred seventy-nine".