690647386 has 16 divisors (see below), whose sum is σ = 1217085408. Its totient is φ = 289782000.

The previous prime is 690647351. The next prime is 690647407. The reversal of 690647386 is 683746096.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1207140 + ... + 1207711.

It is an arithmetic number, because the mean of its divisors is an integer number (76067838).

Almost surely, 2^690647386 is an apocalyptic number.

690647386 is a deficient number, since it is larger than the sum of its proper divisors (526438022).

690647386 is a wasteful number, since it uses less digits than its factorization.

690647386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414877.

The product of its (nonzero) digits is 1306368, while the sum is 49.

The square root of 690647386 is about 26280.1709659583. The cubic root of 690647386 is about 883.9318663662.

The spelling of 690647386 in words is "six hundred ninety million, six hundred forty-seven thousand, three hundred eighty-six".