653950 has 48 divisors (see below), whose sum is σ = 1406160. Its totient is φ = 224000.

The previous prime is 653941. The next prime is 653951. The reversal of 653950 is 59356.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (653951) 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, 15930 + ... + 15970.

It is an arithmetic number, because the mean of its divisors is an integer number (29295).

2⁶⁵³⁹⁵⁰ is an apocalyptic number.

653950 is an abundant number, since it is smaller than the sum of its proper divisors (752210).

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

653950 is a wasteful number, since it uses less digits than its factorization.

653950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 653950 is about 808.6717504649. The cubic root of 653950 is about 86.7990252391.

It can be divided in two parts, 6 and 53950, that added together give a triangular number (53956 = T₃₂₈).

The spelling of 653950 in words is "six hundred fifty-three thousand, nine hundred fifty".