2978668707 has 8 divisors (see below), whose sum is σ = 4538923776. Its totient is φ = 1702096392.

The previous prime is 2978668603. The next prime is 2978668729. The reversal of 2978668707 is 7078668792.

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

It is not a de Polignac number, because 2978668707 - 2¹⁴ = 2978652323 is a prime.

It is a super-2 number, since 2×2978668707² = 17744934532122103698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2978668207) 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, 70920663 + ... + 70920704.

It is an arithmetic number, because the mean of its divisors is an integer number (567365472).

Almost surely, 2^2978668707 is an apocalyptic number.

2978668707 is a deficient number, since it is larger than the sum of its proper divisors (1560255069).

2978668707 is a wasteful number, since it uses less digits than its factorization.

2978668707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141841377.

The product of its (nonzero) digits is 14224896, while the sum is 60.

The square root of 2978668707 is about 54577.1811932423. The cubic root of 2978668707 is about 1438.8230975116.

The spelling of 2978668707 in words is "two billion, nine hundred seventy-eight million, six hundred sixty-eight thousand, seven hundred seven".