690147254 has 4 divisors (see below), whose sum is σ = 1035220884. Its totient is φ = 345073626.

The previous prime is 690147217. The next prime is 690147281. The reversal of 690147254 is 452741096.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×690147254³ (a number of 27 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172536812 + ... + 172536815.

It is an arithmetic number, because the mean of its divisors is an integer number (258805221).

Almost surely, 2^690147254 is an apocalyptic number.

690147254 is a deficient number, since it is larger than the sum of its proper divisors (345073630).

690147254 is a wasteful number, since it uses less digits than its factorization.

690147254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345073629.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 690147254 is about 26270.6538555857. The cubic root of 690147254 is about 883.7184485520.

The spelling of 690147254 in words is "six hundred ninety million, one hundred forty-seven thousand, two hundred fifty-four".