690662248 has 8 divisors (see below), whose sum is σ = 1294991730. Its totient is φ = 345331120.

The previous prime is 690662243. The next prime is 690662257. The reversal of 690662248 is 842266096.

It can be written as a sum of positive squares in only one way, i.e., 645261604 + 45400644 = 25402^2 + 6738^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (690662243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43166383 + ... + 43166398.

Almost surely, 2^690662248 is an apocalyptic number.

It is an amenable number.

690662248 is a deficient number, since it is larger than the sum of its proper divisors (604329482).

690662248 is a wasteful number, since it uses less digits than its factorization.

690662248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86332787 (or 86332783 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 690662248 is about 26280.4537251547. The cubic root of 690662248 is about 883.9382067465.

The spelling of 690662248 in words is "six hundred ninety million, six hundred sixty-two thousand, two hundred forty-eight".