690954 has 48 divisors (see below), whose sum is σ = 1645920. Its totient is φ = 191520.

The previous prime is 690953. The next prime is 690997. The reversal of 690954 is 459096.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (690953) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23812 + ... + 23840.

It is an arithmetic number, because the mean of its divisors is an integer number (34290).

2⁶⁹⁰⁹⁵⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 690954, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (822960).

690954 is an abundant number, since it is smaller than the sum of its proper divisors (954966).

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

690954 is a wasteful number, since it uses less digits than its factorization.

690954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 690954 is about 831.2364284606. The cubic root of 690954 is about 88.4062654664.

The spelling of 690954 in words is "six hundred ninety thousand, nine hundred fifty-four".