690515648 has 28 divisors (see below), whose sum is σ = 1371310440. Its totient is φ = 344988672.

The previous prime is 690515647. The next prime is 690515653. The reversal of 690515648 is 846515096.

It is a super-3 number, since 3×690515648³ (a number of 27 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 690515599 and 690515608.

It is not an unprimeable number, because it can be changed into a prime (690515647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97640 + ... + 104472.

Almost surely, 2^690515648 is an apocalyptic number.

It is an amenable number.

690515648 is a deficient number, since it is larger than the sum of its proper divisors (680794792).

690515648 is a wasteful number, since it uses less digits than its factorization.

690515648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8424 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 44.

The square root of 690515648 is about 26277.6644319848. The cubic root of 690515648 is about 883.8756607330.

The spelling of 690515648 in words is "six hundred ninety million, five hundred fifteen thousand, six hundred forty-eight".