901605397 has 16 divisors (see below), whose sum is σ = 1135677312. Its totient is φ = 695301120.

The previous prime is 901605391. The next prime is 901605401. The reversal of 901605397 is 793506109.

It is a cyclic number.

It is not a de Polignac number, because 901605397 - 2⁷ = 901605269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901605391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52888 + ... + 67825.

It is an arithmetic number, because the mean of its divisors is an integer number (70979832).

Almost surely, 2^901605397 is an apocalyptic number.

901605397 is a gapful number since it is divisible by the number (97) formed by its first and last digit.

It is an amenable number.

901605397 is a deficient number, since it is larger than the sum of its proper divisors (234071915).

901605397 is a wasteful number, since it uses less digits than its factorization.

901605397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120828.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 901605397 is about 30026.7446953545. The cubic root of 901605397 is about 966.0631153689.

The spelling of 901605397 in words is "nine hundred one million, six hundred five thousand, three hundred ninety-seven".