70780491 has 24 divisors (see below), whose sum is σ = 108937920. Its totient is φ = 44156016.

The previous prime is 70780483. The next prime is 70780531. The reversal of 70780491 is 19408707.

It is not a de Polignac number, because 70780491 - 2³ = 70780483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70780441) 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, 11700 + ... + 16686.

It is an arithmetic number, because the mean of its divisors is an integer number (4539080).

Almost surely, 2^70780491 is an apocalyptic number.

70780491 is a deficient number, since it is larger than the sum of its proper divisors (38157429).

70780491 is a wasteful number, since it uses less digits than its factorization.

70780491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5095 (or 5092 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 70780491 is about 8413.1142272050. The cubic root of 70780491 is about 413.6545988397.

The spelling of 70780491 in words is "seventy million, seven hundred eighty thousand, four hundred ninety-one".