690630648 has 32 divisors (see below), whose sum is σ = 1782274560. Its totient is φ = 222783840.

The previous prime is 690630607. The next prime is 690630673. The reversal of 690630648 is 846036096.

It is a congruent number.

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, 463390 + ... + 464877.

It is an arithmetic number, because the mean of its divisors is an integer number (55696080).

Almost surely, 2^690630648 is an apocalyptic number.

It is an amenable number.

690630648 is an abundant number, since it is smaller than the sum of its proper divisors (1091643912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

690630648 is a wasteful number, since it uses less digits than its factorization.

690630648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928307 (or 928303 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 690630648 is about 26279.8525110017. The cubic root of 690630648 is about 883.9247255437.

The spelling of 690630648 in words is "six hundred ninety million, six hundred thirty thousand, six hundred forty-eight".