623445674 has 4 divisors (see below), whose sum is σ = 935168514. Its totient is φ = 311722836.

The previous prime is 623445673. The next prime is 623445677. The reversal of 623445674 is 476544326.

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., 536154025 + 87291649 = 23155^2 + 9343^2 .

It is not an unprimeable number, because it can be changed into a prime (623445673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155861417 + ... + 155861420.

Almost surely, 2^623445674 is an apocalyptic number.

623445674 is a deficient number, since it is larger than the sum of its proper divisors (311722840).

623445674 is a wasteful number, since it uses less digits than its factorization.

623445674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311722839.

The product of its digits is 483840, while the sum is 41.

The square root of 623445674 is about 24968.8941284952. The cubic root of 623445674 is about 854.2786222933.

The spelling of 623445674 in words is "six hundred twenty-three million, four hundred forty-five thousand, six hundred seventy-four".