623012620466 has 4 divisors (see below), whose sum is σ = 934518930702. Its totient is φ = 311506310232.

The previous prime is 623012620463. The next prime is 623012620493. The reversal of 623012620466 is 664026210326.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 664026210326 = 2 ⋅332013105163.

It can be written as a sum of positive squares in only one way, i.e., 537765555625 + 85247064841 = 733325^2 + 291971^2 .

It is not an unprimeable number, because it can be changed into a prime (623012620463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155753155115 + ... + 155753155118.

Almost surely, 2^623012620466 is an apocalyptic number.

623012620466 is a deficient number, since it is larger than the sum of its proper divisors (311506310236).

623012620466 is a wasteful number, since it uses less digits than its factorization.

623012620466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311506310235.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 623012620466 in words is "six hundred twenty-three billion, twelve million, six hundred twenty thousand, four hundred sixty-six".