65671378 has 8 divisors (see below), whose sum is σ = 98735868. Its totient is φ = 32759424.

The previous prime is 65671367. The next prime is 65671387. The reversal of 65671378 is 87317656.

It can be written as a sum of positive squares in 2 ways, for example, as 65658609 + 12769 = 8103^2 + 113^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37051 + ... + 38782.

Almost surely, 2^65671378 is an apocalyptic number.

65671378 is a deficient number, since it is larger than the sum of its proper divisors (33064490).

65671378 is a wasteful number, since it uses less digits than its factorization.

65671378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76268.

The product of its digits is 211680, while the sum is 43.

The square root of 65671378 is about 8103.7878797510. The cubic root of 65671378 is about 403.4521582978.

It can be divided in two parts, 65671 and 378, that added together give a square (66049 = 257²).

The spelling of 65671378 in words is "sixty-five million, six hundred seventy-one thousand, three hundred seventy-eight".