245674739 has 6 divisors (see below), whose sum is σ = 247072500. Its totient is φ = 244284840.

The previous prime is 245674733. The next prime is 245674777. The reversal of 245674739 is 937476542.

It is not a de Polignac number, because 245674739 - 2¹² = 245670643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245674693 and 245674702.

It is not an unprimeable number, because it can be changed into a prime (245674733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29012 + ... + 36510.

It is an arithmetic number, because the mean of its divisors is an integer number (41178750).

Almost surely, 2^245674739 is an apocalyptic number.

245674739 is a deficient number, since it is larger than the sum of its proper divisors (1397761).

245674739 is an frugal number, since it uses more digits than its factorization.

245674739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861 (or 7680 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 47.

The square root of 245674739 is about 15674.0147696753. The cubic root of 245674739 is about 626.3063781128.

The spelling of 245674739 in words is "two hundred forty-five million, six hundred seventy-four thousand, seven hundred thirty-nine".