901920061 has 4 divisors (see below), whose sum is σ = 1030765792. Its totient is φ = 773074332.

The previous prime is 901920059. The next prime is 901920067. The reversal of 901920061 is 160029109.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 901920061 - 2¹ = 901920059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (901920067) 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, 64422855 + ... + 64422868.

It is an arithmetic number, because the mean of its divisors is an integer number (257691448).

Almost surely, 2^901920061 is an apocalyptic number.

It is an amenable number.

901920061 is a deficient number, since it is larger than the sum of its proper divisors (128845731).

901920061 is a wasteful number, since it uses less digits than its factorization.

901920061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128845730.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 901920061 is about 30031.9839670975. The cubic root of 901920061 is about 966.1754889667.

The spelling of 901920061 in words is "nine hundred one million, nine hundred twenty thousand, sixty-one".