65626378 has 4 divisors (see below), whose sum is σ = 98439570. Its totient is φ = 32813188.

The previous prime is 65626373. The next prime is 65626403. The reversal of 65626378 is 87362656.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 57198969 + 8427409 = 7563^2 + 2903^2 .

It is not an unprimeable number, because it can be changed into a prime (65626373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16406593 + ... + 16406596.

Almost surely, 2^65626378 is an apocalyptic number.

65626378 is a deficient number, since it is larger than the sum of its proper divisors (32813192).

65626378 is a wasteful number, since it uses less digits than its factorization.

65626378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32813191.

The product of its digits is 362880, while the sum is 43.

The square root of 65626378 is about 8101.0109245698. The cubic root of 65626378 is about 403.3599847304.

It can be divided in two parts, 6 and 5626378, that added together give a square (5626384 = 2372²).

The spelling of 65626378 in words is "sixty-five million, six hundred twenty-six thousand, three hundred seventy-eight".