35720997 has 16 divisors (see below), whose sum is σ = 51524928. Its totient is φ = 21882240.

The previous prime is 35720957. The next prime is 35720999. The reversal of 35720997 is 79902753.

It is not a de Polignac number, because 35720997 - 2⁶ = 35720933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35720999) 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, 7122 + ... + 11052.

It is an arithmetic number, because the mean of its divisors is an integer number (3220308).

Almost surely, 2^35720997 is an apocalyptic number.

It is an amenable number.

35720997 is a deficient number, since it is larger than the sum of its proper divisors (15803931).

35720997 is a wasteful number, since it uses less digits than its factorization.

35720997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4180.

The product of its (nonzero) digits is 119070, while the sum is 42.

The square root of 35720997 is about 5976.7045267438. The cubic root of 35720997 is about 329.3375046824.

The spelling of 35720997 in words is "thirty-five million, seven hundred twenty thousand, nine hundred ninety-seven".