70537489 has 4 divisors (see below), whose sum is σ = 76950000. Its totient is φ = 64124980.

The previous prime is 70537477. The next prime is 70537517. The reversal of 70537489 is 98473507.

It is a happy number.

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 70537489 - 2⁵ = 70537457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70537409) 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, 3206239 + ... + 3206260.

It is an arithmetic number, because the mean of its divisors is an integer number (19237500).

Almost surely, 2^70537489 is an apocalyptic number.

It is an amenable number.

70537489 is a deficient number, since it is larger than the sum of its proper divisors (6412511).

70537489 is a wasteful number, since it uses less digits than its factorization.

70537489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6412510.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 70537489 is about 8398.6599526353. The cubic root of 70537489 is about 413.1806728261.

The spelling of 70537489 in words is "seventy million, five hundred thirty-seven thousand, four hundred eighty-nine".