978460605 has 18 divisors (see below), whose sum is σ = 1696362174. Its totient is φ = 521733744.

The previous prime is 978460601. The next prime is 978460607. The reversal of 978460605 is 506064879.

It can be written as a sum of positive squares in only one way, i.e., 782768484 + 195692121 = 27978^2 + 13989^2 .

It is not a de Polignac number, because 978460605 - 2² = 978460601 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978460601) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 207504 + ... + 212166.

It is an arithmetic number, because the mean of its divisors is an integer number (94242343).

Almost surely, 2^978460605 is an apocalyptic number.

It is an amenable number.

978460605 is a deficient number, since it is larger than the sum of its proper divisors (717901569).

978460605 is an frugal number, since it uses more digits than its factorization.

978460605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9337 (or 4671 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 978460605 is about 31280.3549372446. The cubic root of 978460605 is about 992.7680263040.

Multiplying 978460605 by its sum of digits (45), we get a square (44030727225 = 209835²).

978460605 divided by its sum of digits (45) gives a square (21743569 = 4663²).

The spelling of 978460605 in words is "nine hundred seventy-eight million, four hundred sixty thousand, six hundred five".